CN111496099A - Automatic punch with drawing die - Google Patents
Automatic punch with drawing die Download PDFInfo
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- CN111496099A CN111496099A CN202010357264.8A CN202010357264A CN111496099A CN 111496099 A CN111496099 A CN 111496099A CN 202010357264 A CN202010357264 A CN 202010357264A CN 111496099 A CN111496099 A CN 111496099A
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- Prior art keywords
- upper die
- air
- die
- raw material
- machine body
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- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
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- 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
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Punching Or Piercing (AREA)
Abstract
The invention relates to an automatic punch press with a drawing die, which relates to the technical field of punch presses and comprises a machine body, a transmission mechanism, an upper die, a lower die and a driving mechanism, wherein the transmission mechanism is arranged on the machine body and used for transmitting raw materials, the upper die is arranged above the transmission mechanism in a sliding mode, the lower die is arranged below the transmission mechanism in a sliding mode and vertically opposite to the upper die, the driving mechanism is used for driving the upper die and the lower die to move so as to realize the insertion fit of the upper die and the lower die, a scrap cleaning mechanism is arranged on the machine body and comprises an air nozzle arranged on the top wall inside the upper die, a gas pipe penetrating through the upper die and communicated with the air nozzle and an air pump communicated with the gas pipe, the air. The invention has the effect of removing the scraps and the burrs on the inner wall of the upper die to prevent the scraps and the burrs from scratching the next raw material when the upper die is subjected to the next drawing process, thereby improving the yield.
Description
Technical Field
The invention relates to the technical field of punching machines, in particular to an automatic punching machine with a deep drawing die.
Background
At present, compared with the traditional machining, the stamping process has the advantages of material and energy conservation, high efficiency, low technical requirement on operators and capability of manufacturing products which cannot be achieved by the machining through various die applications, so that the stamping process has wider and wider application. The stamping process generally needs to use an automatic punch press, mainly aims at processing plates, can perform the working procedures of blanking, punching, forming, deep drawing, trimming, fine stamping, shaping, riveting, extruding and the like through a stamping die, and is widely applied to various fields.
Referring to fig. 1, a housing of a motor is generally manufactured by a drawing stamping process, and a through hole for a motor output shaft to pass through is reserved on the housing of the motor, so the through hole can be generally used as a positioning hole of a drawing die, the drawing die of the existing punch mainly comprises an upper die 12 and a lower die 13 positioned below the upper die 12, the upper die 12 is in a hollow cylindrical shape, the lower die 13 is in a cylindrical shape, the outer diameter of the lower die 13 is smaller than the inner diameter of the upper die 12, a positioning column 131 is arranged on the lower die 13, the positioning column 131 is in plug-in fit with the through hole of the motor housing, and when the lower die 13 is in plug-in fit with. And the support bars 111 are made by the stamping or cutting process before the raw material 11 is lifted, the support bars 111 and the raw material 11 are integrally formed, and the plurality of support bars are distributed at equal angular intervals along the part to be drawn of the raw material 11 and are used for providing uniform support force for the drawn part of the raw material 11 during transportation and drawing, so that the influence of the deviation of the drawn part of the raw material 11 on the processing precision is avoided.
The above prior art solutions have the following drawbacks: when the lower die 13 and the upper die 12 are in plug fit to extrude the raw material 11, the lower die 13, the upper die 12 and the raw material 11 rub against each other, so that fragments are easily generated, the fragments are easily adhered to the inner wall of the upper die 12, and burrs on the raw material 11 may fall off and adhere to the upper die 12 during rubbing, so that the inner wall of the upper die 12 becomes rough, and therefore the fragments and the burrs scratch the next motor housing raw material 11 when the upper die 12 is subjected to the next drawing process, and the yield is reduced.
Disclosure of Invention
Aiming at the defects in the prior art, one of the purposes of the invention is to provide an automatic punch with a drawing die, which can remove the scraps and burrs on the inner wall of an upper die and prevent the scraps and burrs from scratching the next raw material when the upper die is subjected to the next drawing process, thereby improving the yield.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides a take automatic punch press of deep-drawing mould, includes the organism, set up the transport mechanism of confession raw materials transmission on the organism, slide and set up in the last mould of transport mechanism top, slide and set up in the transport mechanism below and with the vertical relative lower mould of last mould and drive go up the mould and remove with the lower mould in order to realize both grafting complex actuating mechanism, be provided with clear bits mechanism on the organism, clear bits mechanism is including setting up the air cock on the inside roof of last mould, pass the air pump that goes up the mould and with the gas-supply pipe of air cock intercommunication and communicate with the gas-supply pipe, the direction of giving vent to anger of air cock is the contained angle with the central axis direction of last mould, and the air.
Through adopting above-mentioned technical scheme, after drawing technology is accomplished with the lower mould to the upper die, the raw materials breaks away from the mould, piece and burr remain on last mould inner wall, start the air pump this moment, high-pressure gas passes through the gas-supply pipe and transmits to air cock department, because the central axis of the last mould of the direction of giving vent to anger and the cylinder of air cock is the contained angle, so that the air cock is relative with the inner wall of last mould, piece and burr on the mould inner wall are clear away to this form through the air current impact, piece and the next raw materials of burr fish tail when avoiding going up the mould and carrying out drawing technology next time, thereby.
The present invention in a preferred example may be further configured to: a plurality of air holes communicated with the gas conveying pipe are formed in the air faucet, the air holes are distributed along the circumferential direction of the upper die at equal angle intervals, an included angle is formed between the opening direction of the air holes and the direction of the central axis of the upper die, and air flow sprayed out of the air holes radiates from the central axis of the upper die to the periphery.
By adopting the technical scheme, the opening direction of the air holes and the direction of the central axis of the upper die form an included angle, and the air flow sprayed by the air holes radiates from the central axis of the upper die to the periphery, so that the air flow generated by the air pump impacts on each part of the inner wall of the upper die, the coverage area of the air flow is increased, the scraps remained on the inner wall of the upper die are reduced, and the yield is increased.
The present invention in a preferred example may be further configured to: and the lower die is provided with a positioning column which is in plug-in fit with the raw material through hole, and the positioning column, the through hole and the air tap are vertically opposite when the upper die is in plug-in fit with the lower die.
Through adopting above-mentioned technical scheme, realize the locking of lower mould and raw materials through the grafting cooperation of reference column and through-hole, avoid the raw materials to take place the skew and influence the machining precision, and reference column, through-hole, air cock three are vertical relative to this stops up the gas pocket and causes the clear bits functional failure such as the piece that drops on avoiding raw materials extrusion air cock to cause the air cock to damage or the raw materials.
The present invention in a preferred example may be further configured to: the upper die is characterized in that a mounting hole vertically opposite to the air faucet is formed in the top of the upper die, the air faucet slides and is connected with the mounting hole along the inserting direction of the upper die and the lower die, and when the upper die is separated from raw materials and reaches the highest point of the stroke of the upper die, the air faucet enters the upper die and is communicated with the inner space of the upper die.
By adopting the technical scheme, the air faucet and the upper die can slide relatively, when the upper die descends to perform a drawing process, the air faucet is separated from the upper die along the mounting hole, so that the air faucet is prevented from contacting with a raw material and being damaged, meanwhile, a channel for supplying pressure relief for emptying air in the upper die is provided, the load of a driving mechanism for driving the upper die to move is reduced, the energy consumption is reduced, and the energy is saved; and when the drawing process is finished and the upper die is reset and returns to the highest point, the air nozzle moves relative to the upper die and enters the upper die, so that chips are cleaned through air flow, and the yield is improved.
The present invention in a preferred example may be further configured to: the air faucet is arranged in the upper die, the air faucet is arranged in the lower die, the air faucet is arranged in the upper die, and the air faucet is connected with the air pump electrically to respond to a detection signal and control the air pump to start.
Through adopting above-mentioned technical scheme, detect the relative position of mould and air cock through induction system, induction system output detected signal when the air cock gets into in the upper mould and with last mould inner space intercommunication, start with this control air pump, clear up debris, impurity such as burr through the air current, thereby automatically, open or close the air pump, shorten the operating duration of air pump, reduce the energy consumption, promote energy-conservation, gaseous turn-off conveniently realizes going up the gaseous evacuation of mould when the deep-drawing simultaneously, actuating mechanism's load has been reduced, thereby energy-conservation has been promoted.
The present invention in a preferred example may be further configured to: the induction system comprises an infrared transmitter, an infrared receiver vertically opposite to the infrared transmitter and a controller arranged on the machine body, wherein the infrared transmitter and the infrared receiver are respectively connected with the upper die and the machine body, when the upper die is lifted to the air tap to enter the upper die, the infrared receiver receives an optical signal of the infrared transmitter and outputs a trigger signal, and the controller is electrically connected with the infrared receiver to output a detection signal in response to the trigger signal.
Through adopting above-mentioned technical scheme, in the air cock got into the upper die when deep-drawing process was accomplished and the upper die resets and is got back to the culmination, infrared emitter and infrared receiver's interval dwindled below the settlement distance this moment, infrared receiver received infrared emitter's light signal and output trigger signal, and the controller responds trigger signal output detection signal again to this control air pump starts, clears up impurity such as piece, burr through the air current.
The present invention in a preferred example may be further configured to: conveying mechanism sets up feed roll, parallel arrangement in the compression roller of feed roll one side on the organism including rotating, set up drive feed roll pivoted driving piece on the organism and set up the guide post that lies in raw materials transmission channel both sides on the organism, the raw materials pass between feed roll and the compression roller and the feed roll, the week lateral wall of compression roller respectively with the both sides surface roll connection of raw materials, the annular has been seted up along its circumference on the guide post, the side of raw materials is along extending to in the annular of the guide post of both sides.
Through adopting above-mentioned technical scheme, the raw materials pass between feed roll and the compression roller and the side wall all around of feed roll, compression roller respectively with the both sides surface roll connection of raw materials, the frictional force of feed roll drives the raw materials and transmits forward when driving piece drive feed roll rotates, and the guide post carries on spacingly to the raw materials, avoids the raw materials to take place the skew to the convenience is fixed a position the raw materials, improves the machining precision.
The present invention in a preferred example may be further configured to: go up the mould and wear to be equipped with the busbar, the busbar extends to last mould bottom and flushes with the bottom surface of last mould, busbar and raw materials butt when last mould and raw materials butt, the electricity is connected with voltage detection device on the busbar, the guide post adopts electrically conductive material and one end ground connection, and voltage detection device triggers and output stop signal when the busbar ground connection, and voltage detection device is connected with actuating mechanism electricity and stops in current position in order to respond to stop signal control last mould.
By adopting the technical scheme, when the raw material is conveyed to a designated position to wait for stamping, one end of the raw material is grounded because the edge of the raw material is limited in the annular groove of the guide column and the raw material is made of metal or alloy and has conductivity; after the raw materials take one's place, need let go up the mould earlier the butt in raw materials top surface, rethread lower mould extrusion raw materials bottom surface carries out the deep-drawing process, and busbar and raw materials butt when last mould butt in raw materials, busbar ground connection makes voltage detection device trigger and output stop signal this moment, and voltage detection device responds stop signal control actuating mechanism so that go up the mould and stop in the current position to the stroke of mould is gone up in the control, avoids going up the mould and pushes down excessively to make raw materials and guide post damage, thereby protection raw materials and guide post.
The present invention in a preferred example may be further configured to: the voltage detection device comprises a power supply, an NPN type triode, a grounding resistor and a relay, wherein a base electrode of the NPN type triode is connected to the positive electrode of the power supply through the grounding resistor, a collector electrode and an emitter electrode of the NPN type triode are connected in series in a power supply loop of a relay coil, a conductive bar is connected between the grounding resistor and the base electrode of the NPN type triode, an excitation signal is output when the relay coil is electrified, and a driving mechanism receives the excitation signal and controls an upper die to stop at the current position when the excitation signal is interrupted.
By adopting the technical scheme, when the conductive bar is grounded through the raw material and the guide post, the base voltage of the NPN type triode is pulled down, the collector and the emitter of the NPN type triode are cut off, the relay is powered off to interrupt the output excitation signal, and the driving mechanism responds to the interruption of the excitation signal to control the upper die to stop at the current position, so that the stroke of the upper die is controlled, the raw material and the guide post are prevented from being damaged due to the fact that the upper die is pressed down excessively, and the raw material and the guide post are protected.
The present invention in a preferred example may be further configured to: and an air blowing device is arranged on one side of the machine body, which is positioned on the raw material conveying channel, a waste bin used for receiving chips and burrs is arranged on the other side of the machine body, and the opening of the waste bin is horizontally opposite to the air outlet side of the air blowing device.
Through adopting above-mentioned technical scheme, blow off through impurity such as piece, burr in with the upper die through the air current when the air pump operation, and produce horizontally air current when air-blast device starts for the orientation that drops of impurity such as guide piece, burr makes it to get into and collects in the dump bin of organism one side, thereby makes things convenient for the clearance of impurity, avoids the impurity adhesion on raw materials or lower mould and influences the processing of raw materials.
In summary, the invention includes at least one of the following beneficial technical effects:
after the upper die and the lower die complete the primary drawing process, raw materials are separated from the upper die, chips and burrs are remained on the inner wall of the upper die, the air pump is started at the moment, high-pressure gas is transmitted to the air faucet through the gas transmission pipe, the air outlet direction of the air faucet forms an included angle with the central axis of the cylindrical upper die, so that the air faucet is opposite to the inner wall of the upper die, the chips and the burrs on the inner wall of the upper die are removed in an air flow impact mode, the chips and the burrs are prevented from scratching the next raw material when the upper die performs the next drawing process, and the;
the air faucet and the upper die can slide relatively, when the upper die descends to perform a drawing process, the air faucet is separated from the upper die along the mounting hole, so that the air faucet is prevented from contacting with a raw material, the air faucet is prevented from being damaged, meanwhile, a channel for supplying pressure relief for emptying air in the upper die, namely the mounting hole, is used for reducing the load of a driving mechanism for driving the upper die to move, reducing the energy consumption and saving the energy; when the drawing process is finished and the upper die is reset and returns to the highest point, the air nozzle moves relative to the upper die and enters the upper die, so that scraps are cleaned through air flow, and the yield is improved;
the guide post ground connection is passed through to raw materials one end, and busbar and raw materials butt when last mould butt when the raw materials, busbar ground connection this moment make voltage detection device trigger and output stop signal, and voltage detection device responds stop signal control actuating mechanism so that to go up the mould and stop in the current position to the stroke of mould is gone up in the control, avoids going up the mould and pushes down excessively to make raw materials and guide post damage, thereby protection raw materials and guide post.
Drawings
FIG. 1 is a schematic structural diagram of an upper mold, a lower mold and raw materials in the background art;
FIG. 2 is a schematic view of the overall structure of the present embodiment;
FIG. 3 is a schematic cross-sectional view taken along the radial direction of the upper mold of the present embodiment, mainly illustrating the air nozzle;
FIG. 4 is an enlarged partial schematic view of portion A of FIG. 2;
fig. 5 is a schematic circuit diagram of the voltage detection device in the present embodiment.
Reference numerals: 1. a body; 11. raw materials; 111. a supporting strip; 12. an upper die; 121. a conductive strip; 122. mounting holes; 13. a lower die; 131. a positioning column; 2. a transport mechanism; 21. a feed roller; 22. a compression roller; 23. a drive member; 231. a stepping motor; 24. a guide post; 241. a ring groove; 3. a drive mechanism; 31. a first hydraulic cylinder; 32. a second hydraulic cylinder; 4. a scrap cleaning mechanism; 41. an air tap; 411. air holes; 42. a gas delivery pipe; 43. an air pump; 5. an induction device; 51. an infrared emitter; 52. an infrared receiver; 53. a controller; 6. a blower device; 61. a fan; 62. a waste bin.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 2, the automatic punching machine with a drawing die disclosed by the invention is used for a stamping process of drawing a raw material 11 made of metal or alloy material, and comprises a machine body 1, a conveying mechanism 2 arranged on the machine body 1 and used for conveying the raw material 11, an upper die 12 arranged above the conveying mechanism 2 in a sliding manner, a lower die 13 arranged below the conveying mechanism 2 in a sliding manner and vertically opposite to the upper die 12, and a driving mechanism 3. The conveying mechanism 2 conveys the raw material 11 between the upper die 12 and the lower die 13, the driving mechanism 3 drives the upper die 12 and the lower die 13 to slide so as to realize the insertion fit of the upper die 12 and the lower die 13, and the raw material 11 between the upper die 12 and the lower die 13 is extruded when the upper die 12 and the lower die 13 are in the insertion fit, so that the drawing stamping process is completed, and the cylindrical motor shell workpiece is obtained.
The transmission mechanism 2 comprises a feed roller 21 rotatably arranged on the machine body 1, a press roller 22 arranged on one side of the feed roller 21 in parallel, a driving piece 23 arranged on the machine body 1 and used for driving the feed roller 21 to rotate, and a guide post 24. The feeding roller 21 and the pressing roller 22 are both cylindrical, the end parts of the feeding roller 21 and the pressing roller 22 are rotatably connected with the machine body 1 through bearings, the pressing roller 22 is located above the raw material 11, the feeding roller 21 is located below the raw material 11, the raw material 11 passes through the space between the feeding roller 21 and the pressing roller 22, and the peripheral side walls of the feeding roller 21 and the pressing roller 22 are respectively in rolling connection with the surfaces of two sides of the raw material 11. The driving member 23 includes a stepping motor 231 fixed to the machine body 1 by screws, and an output shaft of the stepping motor is coaxially fixed to one end of the feed roller 21, so as to drive the feed roller 21 to rotate, and the pressing roller 22 is engaged to drive the raw material 11 to be conveyed forward by friction.
The upper die 12 is cylindrical, a cylindrical cavity is formed in the upper die 12, the opening of the cavity faces downwards, the lower die 13 is cylindrical, the central axis of the upper die 12 and the central axis of the lower die 13 are overlapped, and the raw material 11 is located between the upper die 12 and the lower die 13. The motor housing workpiece formed by drawing the raw material 11 has an inner diameter larger than that of the lower die 13 and an outer diameter smaller than that of the upper die 12, so that the sheet-shaped raw material 11 is drawn into a cylindrical motor housing workpiece when the upper die 12 is inserted into the lower die 13.
Referring to fig. 2 and 3, the driving mechanism 3 for driving the upper mold 12 and the lower mold 13 to move includes a first hydraulic cylinder 31 connected to the upper mold 12 and a second hydraulic cylinder 32 connected to the lower mold 13. First pneumatic cylinder 31 and second pneumatic cylinder 32 are all fixed through screw and organism 1, and the piston rod of first pneumatic cylinder 31 with go up mould 12 top welded fastening, the piston rod of second pneumatic cylinder 32 and lower mould 13 bottom welded fastening, the flexible direction of first pneumatic cylinder 31 and second pneumatic cylinder 32 is in same vertical line.
The top of the lower die 13 is integrally provided with a positioning column 131 in plug-in fit with the through hole of the raw material 11, the positioning column 131 is cylindrical, the lower die 13 and the raw material 11 are locked by the plug-in fit of the positioning column 131 and the through hole, and the influence on the processing precision caused by the deviation of the raw material 11 is avoided. When the raw material 11 reaches a designated position, that is, when the central axis of the positioning column 131 coincides with the central axis of the through hole of the raw material 11, the first hydraulic cylinder 31 drives the upper die 12 to descend to abut against the top surface of the raw material 11 and stop, thereby supporting the top surface of the raw material 11. Then the second hydraulic cylinder 32 drives the lower die 13 to ascend, the positioning column 131 is inserted into the through hole, the lower die 13 continuously ascends and extrudes the raw material 11 until the raw material 11 is inserted into the cavity of the upper die 12, and therefore the raw material 11 is formed in a deep drawing mode.
Referring to fig. 4, conductive strip 121 is disposed through upper die 12, conductive strip 121 is made of copper, conductive strip 121 extends to the bottom of upper die 12 and is flush with the bottom surface of upper die 12, conductive strip 121 is covered with an insulating layer, and the insulating layer may be made of epoxy resin, so as to isolate conductive strip 121 from upper die 12. The guiding column 24 is made of conductive material, one end of the guiding column is grounded, and a normally closed switch SW (see fig. 4) is arranged between the guiding column 24 and the ground, so that the guiding column 24 can be conveniently controlled to be grounded or empty. Conductive strip 121 abuts against raw material 11 when upper die 12 abuts against raw material 11, thereby achieving grounding of conductive strip 121. The conductive bar 121 is electrically connected to a voltage detection device, the voltage detection device triggers and outputs a stop signal when the conductive bar 121 is grounded, and the voltage detection device is electrically connected to the first hydraulic cylinder 31 to respond to the stop signal to control the upper die 12 to stop at the current position, so as to control the stroke of the upper die 12, avoid the raw material 11 and the guide column 24 from being damaged due to the excessive pressing of the upper die 12, and thus protect the raw material 11 and the guide column 24.
Referring to fig. 4 and 5, the voltage detection device includes a power supply, an NPN transistor Q1, a ground resistor R1, and a relay KM 1. The base of the NPN type triode Q1 is connected to the positive electrode of the power supply through a ground resistor R1, the collector thereof is connected to the VCC terminal through a coil of the relay KM1, and the emitter thereof is grounded. The normally open switch KM1-1 of the relay KM1 is connected in series in the power supply loop of the solenoid valve S1 of the first hydraulic cylinder 31, and the conductive strip 121 is connected between the ground resistor and the base of the NPN-type triode. When the conductive bar 121 is grounded through the raw material 11 and the guide post 24, the base voltage of the NPN type triode Q1 is pulled low, the collector and the emitter are cut off, the relay KM1 is de-energized to interrupt the excitation signal output by the relay, and the normally open switch KM1-1 disconnects the power supply loop of the electromagnetic valve S1 of the first hydraulic cylinder 31, so that the first hydraulic cylinder 31 stops operating, thereby controlling the upper die 12 to stop at the current position and avoiding the raw material 11 and the guide post 24 from being damaged due to excessive pressing of the upper die 12. The grounding resistor R1 is used for preventing the power supply from being damaged due to direct grounding, and plays a role in protecting the power supply.
Referring to fig. 2 and 3, a mounting hole 122 is formed through the top of the upper die 12, the mounting hole 122 is circular and communicates with an external cavity of the upper die 12, and the positioning column 131, the through hole and the mounting hole 122 are vertically opposite to each other when the upper die 12 is in splicing fit with the lower die 13. The machine body 1 is provided with a chip cleaning mechanism 4 for cleaning chips and burrs left in the upper die 12, and the chip cleaning mechanism 4 comprises an air nozzle 41 slidably arranged in the mounting hole 122, an air pipe 42 penetrating through the upper die 12 and communicated with the air nozzle 41, and an air pump 43 communicated with the air pipe 42. The positioning column 131, the through hole and the air nozzle 41 are vertically opposite to each other, so that the air nozzle 41 is prevented from being damaged by the raw material 11 extruding the air nozzle 41 when the upper die 12 is pressed down, or chips and the like falling off from the raw material 11 block the air hole 411 to cause the failure of the chip cleaning function.
The sliding direction of the air nozzle 41 along the mounting hole 122 is consistent with the plugging direction of the upper die 12 and the lower die 13, when the upper die 12 is separated from the raw material 11 and reaches the highest point of the stroke, the air nozzle 41 enters the upper die 12 and is communicated with the cavity of the upper die 12, so that the air nozzle 41 is prevented from being damaged by contacting with the raw material 11; meanwhile, a pressure relief channel is provided for exhausting air in the upper die 12, the load of a driving mechanism 3 for driving the upper die 12 to slide is reduced, the energy consumption is reduced, and the energy is saved. The machine body 1 is provided with a sensing device 5 for controlling the on-off of the gas in the gas nozzle 41, when the gas nozzle 41 reaches the upper die 12, a detection signal is output, and the sensing device 5 is electrically connected with the air pump 43 to respond the detection signal and control the start of the air pump 43.
Referring to fig. 2 and 4, the sensing device 5 includes an infrared emitter 51, an infrared receiver 52 vertically opposite to the infrared emitter 51, and a controller 53 disposed on the machine body 1, the infrared emitter 51 and the infrared receiver 52 are vertically opposite to each other, and an E3JK-5DM 1-5L photoelectric switch sensor is adopted, the infrared emitter 51 and the infrared receiver 52 are respectively fixed to the upper die 12 and the machine body 1 by screws, the controller 53 is fixed to the machine body 1 by a single chip microcomputer, the infrared emitter 51 and the infrared receiver 52 are close to each other when the upper die 12 is lifted, and the infrared receiver 52 receives an optical signal of the infrared emitter 51 and outputs a trigger signal when the upper die 12 is lifted until the air nozzle 41 enters the cavity of the upper die 12, the controller 53 is electrically connected to the infrared receiver 52 to output a detection signal in response to the trigger signal, and the controller 53 is electrically connected to the air pump 43 to control the air pump 43 to be started in response to control the air pump 43 to clean debris, burrs and other.
When the upper die 12 descends, the infrared emitter 51 and the infrared receiver 52 are separated by a distance, so that the detection signal is interrupted, the air pump 43 is turned off, the air pump 43 is automatically turned on or off, the running time of the air pump 43 is shortened, the energy consumption is reduced, and the energy saving performance is improved; meanwhile, the gas is turned off, so that the gas evacuation of the upper die 12 during drawing is conveniently realized, the load of the driving mechanism 3 is reduced, and the energy conservation is improved.
The blower device 6 is arranged on one side of the machine body 1, which is located on the raw material 11 transmission channel, the blower device 6 adopts a fan 61, the fan 61 is fixed with the machine body 1 through screws, the air outlet side of the fan is horizontally opposite to the raw material 11, the other side of the machine body 1 is provided with a waste bin 62 used for receiving chips and burrs, the waste bin 62 is integrally formed with the machine body 1, and the opening of the waste bin 62 is horizontally opposite to the air outlet side of the fan 61. Impurity such as piece, burr in will going up mould 12 through the air current blows off when air pump 43 operation, and produces the horizontally air current when fan 61 starts for the direction that drops of impurity such as guide piece, burr makes it collect in getting into the waste bin 62 of organism 1 one side, thereby makes things convenient for the clearance of impurity, avoids the impurity adhesion to influence the processing of raw materials 11 on raw materials 11 or lower mould 13.
The implementation principle of the embodiment is as follows: in the drawing step, the press roll 22 and the feed roll 21 transfer the raw material 11 between the upper die 12 and the lower die 13. When the raw material 11 reaches a designated position, the operator controls the upper die 12 to descend, and when the upper die 12 abuts against the raw material 11, the conductive strip 121 is grounded so that the voltage detection device is triggered and outputs a stop signal, thereby controlling the first hydraulic cylinder 31 to stop the upper die 12 at the current position. Then, the operator controls the second hydraulic cylinder 32 to raise the lower die 13, so that the positioning posts 131 on the lower die 13 are inserted into the through holes of the raw material 11 to lock the raw material 11, and the lower die 13 is further raised to press the raw material 11 until the raw material 11 is inserted into the cavity of the upper die 12, thereby drawing and forming the raw material 11.
After the upper die 12 and the lower die 13 complete the primary drawing process, the operator briefly opens the normally closed switch between the conductive strip 121 and the ground, so that the voltage detection device is temporarily disabled, thereby conveniently controlling the upper die 12 to ascend and reset. When the upper die 12 rises to the air tap 41 and enters the cavity of the upper die 12, the distance between the infrared receiver 52 and the infrared emitter 51 is shortened to a set distance, at the moment, the controller 53 controls the air pump 43 to start, high-pressure gas is transmitted to the air tap 41 through the air pipe 42, and because the air outlet direction of the air hole 411 and the central axis of the cylindrical upper die 12 form an included angle, the air tap 41 is opposite to the inner wall of the upper die 12, so that chips and burrs on the inner wall of the upper die 12 are removed in an air flow impact mode, and the next raw material 11 is prevented from being scratched by the chips and the burrs when the upper die 12 is subjected to the next drawing process, so. The fallen chips, burrs and other impurities enter the waste box 62 under the action of the air flow of the fan 61 to be collected, so that the processing is convenient.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. An automatic punch press with a drawing die comprises a machine body (1), a transmission mechanism (2) arranged on the machine body (1) and used for transmitting raw materials (11), an upper die (12) arranged above the transmission mechanism (2) in a sliding manner, a lower die (13) arranged below the transmission mechanism (2) in a sliding manner and vertically opposite to the upper die (12), and a driving mechanism (3) driving the upper die (12) and the lower die (13) to move so as to realize the insertion fit of the upper die and the lower die, and is characterized in that a scrap cleaning mechanism (4) is arranged on the machine body (1), the scrap cleaning mechanism (4) comprises an air nozzle (41) arranged on the inner top wall of the upper die (12), an air pipe (42) penetrating through the upper die (12) and communicated with the air nozzle (41), and an air pump (43) communicated with the air pipe (42), and the air outlet direction of the air nozzle (41) forms an included angle with the, when the raw material (11) is separated from the upper die (12), the air pump (43) is started and cleans the inner wall of the upper die (12).
2. The automatic punching machine with the deep drawing die is characterized in that a mounting hole (122) vertically opposite to the air tap (41) is formed in the top of the upper die (12), the air tap (41) is connected with the mounting hole (122) in a sliding mode along the inserting connection direction of the upper die (12) and the lower die (13), and when the upper die (12) is separated from the raw material (11) and reaches the highest point of the stroke, the air tap (41) enters the upper die (12) and is communicated with the inner space of the upper die (12).
3. The automatic punching machine with drawing die according to claim 2, characterized in that the machine body (1) is provided with a sensing device (5), the sensing device (5) outputs a detection signal when the air tap (41) reaches the upper die (12), and the sensing device (5) is electrically connected with the air pump (43) to respond to the detection signal and control the air pump (43) to start.
4. The automatic punching machine with the deep drawing die is characterized in that the sensing device (5) comprises an infrared emitter (51), an infrared receiver (52) vertically opposite to the infrared emitter (51) and a controller (53) arranged on the machine body (1), the infrared emitter (51) and the infrared receiver (52) are respectively connected with the upper die (12) and the machine body (1), when the upper die (12) is lifted to the extent that the air nozzle (41) enters the upper die (12), the infrared receiver (52) receives an optical signal of the infrared emitter (51) and outputs a trigger signal, and the controller (53) is electrically connected with the infrared receiver (52) to respond to the trigger signal and output a detection signal.
5. The automatic punching machine with the deep drawing die is characterized in that the conveying mechanism (2) comprises a feeding roller (21) rotatably arranged on the machine body (1), a pressing roller (22) arranged on one side of the feeding roller (21) in parallel, a driving piece (23) arranged on the machine body (1) and used for driving the feeding roller (21) to rotate, and guide columns (24) arranged on the machine body (1) and located on two sides of a conveying channel of the raw material (11), the raw material (11) penetrates between the feeding roller (21) and the pressing roller (22), peripheral side walls of the feeding roller (21) and the pressing roller (22) are respectively in rolling connection with two side surfaces of the raw material (11), annular grooves (241) are formed in the guide columns (24) along the circumferential direction of the guide columns, and side edges of the raw material (11) extend into the annular grooves (241) of the guide columns (24) on two sides.
6. The automatic punching machine with the drawing die as claimed in claim 5, wherein a conductive strip (121) is arranged on the upper die (12) in a penetrating manner, the conductive strip (121) extends to the bottom of the upper die (12) and is flush with the bottom surface of the upper die (12), the conductive strip (121) is abutted to the raw material (11) when the upper die (12) is abutted to the raw material (11), the conductive strip (121) is electrically connected with a voltage detection device, the guide column (24) is made of a conductive material, one end of the guide column is grounded, the voltage detection device is triggered and outputs a stop signal when the conductive strip (121) is grounded, and the voltage detection device is electrically connected with the driving mechanism (3) to respond to the stop signal to control the upper die (12) to stop at the current position.
7. The automatic punching machine with the deep drawing die is characterized in that the voltage detection device comprises a power supply, an NPN type triode, a grounding resistor and a relay, wherein the base of the NPN type triode is connected to the positive pole of the power supply through the grounding resistor, the collector and the emitter of the NPN type triode are connected in series in a power supply loop of a relay coil, a conductive bar (121) is connected between the grounding resistor and the base of the NPN type triode, an excitation signal is output when the relay coil is electrified, and the driving mechanism (3) receives the excitation signal and controls the upper die (12) to stop at the current position when the excitation signal is interrupted.
8. The automatic punching machine with the drawing die is characterized in that a positioning column (131) matched with a through hole of the raw material (11) in an inserting mode is arranged on the lower die (13), and when the upper die (12) is matched with the lower die (13) in the inserting mode, the positioning column (131), the through hole and the air faucet (41) are vertically opposite.
9. The automatic punching machine with the deep drawing die is characterized in that a plurality of air holes (411) communicated with an air conveying pipe (42) are formed in the air nozzle (41), the air holes (411) are distributed along the circumferential direction of the upper die (12) at equal angular intervals, an included angle is formed between the opening direction of the air holes (411) and the direction of the central axis of the upper die (12), and air flows sprayed out of the air holes (411) radiate from the central axis of the upper die (12) to the periphery.
10. The automatic punching machine with deep drawing die according to claim 1, characterized in that an air blowing device (6) is arranged on one side of the machine body (1) located at a raw material (11) conveying channel, a waste bin (62) used for receiving chips and burrs is arranged on the other side of the machine body (1), and an opening of the waste bin (62) is horizontally opposite to an air outlet side of the air blowing device (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357264.8A CN111496099B (en) | 2020-04-29 | 2020-04-29 | Automatic punch with drawing die |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010357264.8A CN111496099B (en) | 2020-04-29 | 2020-04-29 | Automatic punch with drawing die |
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| CN111496099A true CN111496099A (en) | 2020-08-07 |
| CN111496099B CN111496099B (en) | 2021-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116141018A (en) * | 2023-01-06 | 2023-05-23 | 天津世亚模具股份有限公司 | Progressive die for machining automobile parts |
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|---|---|
| CN111496099B (en) | 2021-04-13 |
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