CN110695184B

CN110695184B - Blanking die equipment capable of reducing workpiece deformation

Info

Publication number: CN110695184B
Application number: CN201911024825.6A
Authority: CN
Inventors: 郑炅鑫
Original assignee: Xuzhou Ruiyisheng Machinery Co ltd
Current assignee: Xuzhou ruiyisheng Machinery Co., Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-07-03
Anticipated expiration: 2039-10-25
Also published as: JP6784903B1; CN110695184A; JP2021065933A

Abstract

The invention discloses blanking die equipment capable of reducing workpiece deformation, which comprises a device main body, wherein a clamping cavity with a right opening is arranged in the device main body, a blanking cavity with a left opening is arranged in the inner wall on the left side of the clamping cavity in a communicated mode, a workpiece is placed between the blanking cavity and the clamping cavity, a driving device is arranged in the inner wall on the upper side of the clamping cavity, and a clamping plate is arranged in the clamping cavity in a sliding mode.

Description

Blanking die equipment capable of reducing workpiece deformation

Technical Field

The invention relates to the field of dies, in particular to a blanking die device capable of reducing workpiece deformation.

Background

The blanking is a stamping procedure for separating part of materials or working procedure parts from another part of materials, workpieces or waste materials by using a stamping die, the blanking is a general name of the separation procedures of shearing, blanking, punching, blanking, notching, sectioning, chiseling, trimming, tongue cutting, trimming and the like, in the blanking process, except for metal near a shearing contour line, the workpiece plate does not generate plastic deformation, so that parts blanked and processed by a flat plate are still in a plane shape, some workpiece plates need to be blanked and processed at the boundary, the workpiece plates can generate larger deformation by adopting a common clamping method and a stamping die blanking method at the moment, the production requirements cannot be met, and when the cross section of the stamping die is changed, a female die with a corresponding cross section is generally required to be equipped to finish the blanking, the production cost is increased, the invention discloses a blanking die device capable of reducing workpiece deformation, the invention can solve the problems, can clamp the workpiece and keep the workpiece horizontal during processing, reduces processing errors and can avoid the deformation of the workpiece after blanking, and the cross section of the stamping die completely determines the cross section of the shearing profile of the workpiece without a corresponding female die, thereby reducing the production cost.

Disclosure of Invention

The technical problem is as follows:

when the boundary of the workpiece plate is punched, the workpiece plate is easy to deform greatly and cannot meet the production requirement, and a common punching die needs to be provided with a corresponding female die, so that the production cost is high.

In order to solve the problems, the embodiment designs a blanking die device capable of reducing workpiece deformation, the blanking die device capable of reducing workpiece deformation comprises a device main body, a clamping cavity with a rightward opening is arranged in the device main body, a blanking cavity with a leftward opening is arranged in the inner wall on the left side of the clamping cavity in a communicating mode, a workpiece is placed between the blanking cavity and the clamping cavity, a driving device is arranged in the inner wall on the upper side of the clamping cavity, a clamping plate is slidably arranged in the clamping cavity, threaded holes with upward openings are symmetrically arranged in the clamping plate in a front-back mode, the lower ends of two screw rods in the driving device respectively extend into the threaded holes on two sides and are in threaded connection with the clamping plate, the driving device drives the clamping plate to slide through the two screw rods and can clamp the workpiece, a blanking device is arranged in the inner wall on the upper side of the blanking, the blanking device is connected with the driving device through a transmission belt, a punching die is arranged in the blanking cavity in a sliding manner, the lower end of a screw rod in the blanking device extends into the blanking cavity and is in threaded connection with the punching die, the driving device drives the blanking device through the transmission belt so as to drive the punching die to slide downwards through the screw rod and perform blanking processing on a workpiece, the left end face of the workpiece cannot exceed the left end face of the punching die, a limit groove is arranged in the inner wall of the lower side of the blanking cavity in a communicating manner, a supporting device is arranged in the limit groove, when the workpiece is blanked by the punching die, the supporting device is supported at the lower end of the workpiece under constant pressure, so that the workpiece can be prevented from generating large deformation, and the supporting device can assist the punching die to perform blanking on the workpiece, when different shearing profiles at the workpiece are required, only the die is required to be replaced, and a corresponding concave die is not required to be equipped, so that the production cost can be reduced. Preferably, spring grooves with downward openings are symmetrically arranged in the clamping plate in a front-back manner, a pressure plate can slide in the spring grooves, the lower end of the pressure plate can slide out of the spring grooves, a pressure spring is fixedly connected between the upper end of the pressure plate and the inner wall of the upper side of the spring groove, the pressure spring is electrically connected to the driving device, the driving device drives the clamping plate to slide downwards through the screw rod and abut against the workpiece, the workpiece pushes the pressure plate to slide into the spring grooves and compress the pressure spring, after the pressure plate completely slides into the spring grooves, the driving device is electrified through the pressure spring and the transmission mode in the driving device is changed, at the moment, the driving device does not drive the clamping plate to slide any more, and when the pressure plate on only one side completely slides into the spring grooves, when the pressure plate on the other side is not completely slid into the spring groove, the driving device continues to drive the clamping plate on the side where the pressure plate is not completely slid into the spring groove to slide downwards, and the clamping plate on the other side does not continue to slide downwards until the pressure plates on the two sides are completely slid into the spring groove, so that the workpiece can be kept horizontal.

Beneficially, the driving device comprises a transmission cavity arranged in the inner wall of the upper side of the clamping cavity, a large belt wheel is rotatably arranged in the transmission cavity, a motor is fixedly connected in the large belt wheel, a motor is fixedly arranged in the inner wall of the lower side of the transmission cavity, the lower end of the motor is in power connection with the motor, the right end of the transmission belt is connected to the large belt wheel, the left end of the transmission belt is connected to the blanking device, small belt wheels are symmetrically and rotatably arranged on the front side and the rear side of the large belt wheel, a connecting belt is connected between the large belt wheel and the small belt wheels, a supporting shaft is fixedly connected at the lower end of the small belt wheel, the lower end of the supporting shaft is rotatably connected to the inner wall of the lower side of the transmission cavity, meshing holes are formed in the small belt wheels in a vertically, the punching device is characterized in that a sliding gear is arranged in the meshing hole in a rotatable and slidable manner, the sliding gear can be connected to the driven belt wheel in a meshing manner, a connecting hole with a downward opening is formed in the sliding gear, the upper end of the screw rod can extend into the connecting hole and is connected with the sliding gear, the upper end of the sliding gear is rotatably connected with a sliding shaft, through holes with upward openings are symmetrically and communicated in the inner wall of the upper side of the transmission cavity in a front-back manner, electromagnetic springs are fixedly connected between the sliding shaft and the inner wall of the through holes, the electromagnetic springs on the front side and the rear side are respectively and electrically connected to the pressure springs on the two sides, the motor is started, the motor drives the large belt wheel to rotate, the punching device is driven by the driving belt, meanwhile, the large belt wheel passes through, and then the clamping plate is driven to slide by the screw rod, when the pressure plate completely slides into the spring groove, the pressure spring is compressed, and then the corresponding electromagnetic spring is electrified, so that the sliding shaft is driven to slide upwards, and further the sliding gear is driven to slide upwards, so that the sliding gear is disconnected with the small belt wheel and the screw rod, and at the moment, the screw rod does not rotate any more.

Advantageously, the diameter of the large belt pulley is larger than that of the small belt pulley, so that when the large belt pulley is actively rotated, the small belt pulley can be driven to rotate through the connecting belt.

But preferentially, the slide shaft upper end has linked firmly starting switch, the symmetry just has linked firmly the warning light around the device main part upper end, the warning light internal stability has the conducting block, works as starting switch with can light during the conducting block contact the warning light, as both sides when the warning light all lights, both sides sliding gear with the minipulley and the screw rod all breaks away from the connection, both sides this moment the pressure plate slides in completely in the spring inslot, this moment the work piece keeps the level, and is right this moment the work piece carries out blanking processing.

Beneficially, the blanking device comprises a belt groove communicated with each other and arranged in the inner wall of the left side of the transmission cavity, a cavity is communicated with each other and arranged in the inner wall of the left side of the belt groove, a driven belt wheel is rotatably arranged in the cavity, the left end of the transmission belt is connected with the driven belt wheel, a cantilever shaft is fixedly connected in the driven belt wheel, the upper end of the cantilever shaft is rotatably connected to the inner wall of the upper side of the cavity, a shaft sleeve is rotatably and slidably arranged on the lower side of the driven belt wheel, a spline hole is vertically communicated in the shaft sleeve, the lower end of the cantilever shaft extends into the spline hole and is in spline connection with the shaft sleeve, the upper end of the screw rod extends into the cavity and can extend into the spline hole to be in spline connection with the shaft sleeve, the screw rod is rotatably connected to the device body, and when the warning, when the warning lamps on the two sides are all turned on, the shaft sleeve slides downwards and is connected with the screw rod, at the moment, the large belt wheel rotates and drives the driven belt wheel to rotate through the driving belt, the shaft sleeve is driven to rotate through the cantilever shaft, and the punching die is driven to slide downwards through the screw rod and punches the workpiece.

Preferably, a sliding plate is slidably arranged on the lower side of the driven pulley, the sliding plate is rotatably connected to the shaft sleeve, the lower end of the sliding plate is bilaterally symmetrical and is fixedly connected with a connecting rod, the lower end of the connecting rod extends into the blanking cavity, a buffer plate is slidably arranged on the lower side of the connecting rod, a groove with an upward opening is formed in the buffer plate, a buffer spring is fixedly connected between the lower end of the connecting rod and the inner wall of the lower side of the groove, two connecting springs are fixedly connected between the lower end of the sliding plate and the inner wall of the lower side of the cavity, a limiting groove is symmetrically and communicated with the inner wall of the upper side of the blanking cavity, the buffer plate can slide into the limiting groove, the upper end of the stamping die is abutted against the buffer plate initially, the buffer plate is accommodated in the limiting groove at the moment, the sliding plate and the, at the moment, the connecting spring is in a stretching state, when the warning lamps on two sides are all lightened, the connecting spring is electrified, the connecting spring is further compressed, the connecting rod and the shaft sleeve are further driven to slide downwards, the shaft sleeve is further connected with the screw rod, the buffer spring is compressed at the moment, the buffer plate and the punching die do not slide at the moment, the screw rod rotates to drive the punching die to slide downwards, the punching die is further separated from the buffer plate, and the buffer plate is driven to slide downwards and slide into the punching cavity under the elastic force action of the buffer spring at the moment.

Beneficially, the supporting device comprises one hundred sealing cavities which are distributed in an annular array and communicated with each other and arranged in the inner wall of the lower side of the limiting groove, supporting rods are slidably arranged in the sealing cavities, the sealing cavities are sealed by the supporting rods, the upper ends of the supporting rods abut against the workpiece, an air pump is fixedly arranged in the inner wall of the right side of the limiting groove, a detection box is fixedly connected to the lower end of the air pump, a buffer cavity with an upward opening is arranged in the detection box and communicated with the air pump, an air pressure probe is fixedly connected to the lower end of the air pump and can monitor the air pressure in the buffer cavity in real time, air is fed or exhausted into the buffer cavity through the air pump to control the air pressure in the buffer cavity to be kept constant, an air guide pipe is fixedly connected between the inner wall of the lower side of the sealing cavity and the inner wall of the lower, the air pressure in the sealing cavity is enabled to be consistent with the air pressure in the buffer cavity, one hundred sealing cavities are communicated with each other through the air guide pipe and the buffer cavity, the stamping die slides down and punches the workpiece, the supporting rod which is right opposite to the stamping die slides down, the supporting rod continues to support the workpiece, the air pressure in the sealing cavity and the buffer cavity is increased at the moment, the air pressure in the buffer cavity and the sealing cavity is detected through the air pressure probe at the moment, the air pump is started, the air in the buffer cavity and the sealing cavity is further pumped out, the air pressure in the buffer cavity and the sealing cavity is kept constant, and the supporting rod which slides down at the moment can assist the stamping die to punch the workpiece.

Advantageously, before blanking, the upper end surface of the support rod is kept horizontal with the inner wall of the lower side of the clamping cavity, so that the workpiece is kept horizontal.

The invention has the beneficial effects that: the invention can clamp the workpiece and keep the workpiece horizontal during processing, reduces processing error and avoids deformation of the workpiece after blanking, and the cross section of the die completely determines the cross section of the shearing profile of the workpiece without a corresponding female die, thereby reducing production cost.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic diagram of an overall structure of a blanking die apparatus capable of reducing deformation of a workpiece according to the present invention;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B" of FIG. 1;

FIG. 4 is an enlarged schematic view of "C" of FIG. 1;

FIG. 5 is a schematic view of the structure in the direction "D-D" of FIG. 3;

FIG. 6 is a schematic view of the structure in the direction "E-E" of FIG. 4;

FIG. 7 is a schematic view of the structure in the direction "F-F" of FIG. 5.

Detailed Description

The invention will now be described in detail with reference to fig. 1-7, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a blanking die device capable of reducing workpiece deformation, which is mainly applied to blanking processing at the boundary of a workpiece, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to blanking die equipment capable of reducing workpiece deformation, which comprises a device main body 11, wherein a clamping cavity 21 with a right opening is arranged in the device main body 11, a blanking cavity 23 with a left opening is arranged in the inner wall of the left side of the clamping cavity 21 in a communicated manner, a workpiece 25 is placed between the blanking cavity 23 and the clamping cavity 21, a driving device 101 is arranged in the inner wall of the upper side of the clamping cavity 21, a clamping plate 22 is arranged in the clamping cavity 21 in a sliding manner, threaded holes 20 with upward openings are symmetrically arranged in the clamping plate 22 in a front-back manner, the lower ends of two screw rods 30 in the driving device 101 respectively extend into the threaded holes 20 at two sides and are in threaded connection with the clamping plate 22, the driving device 101 drives the clamping plate 22 to slide through the two screw rods 30 and can clamp the workpiece 25, a blanking device 100 is arranged in the inner wall of the upper side of, the blanking device 100 is connected with the driving device 101 through a transmission belt 53, a die 24 is slidably arranged in the blanking cavity 23, the lower end of a screw rod 42 in the blanking device 100 extends into the blanking cavity 23 and is in threaded connection with the die 24, the driving device 101 drives the blanking device 100 through the transmission belt 53, the screw rod 42 drives the die 24 to slide downwards and punch the workpiece 25, the left end surface of the workpiece 25 cannot exceed the left end surface of the die 24, a limiting groove 26 is arranged in the inner wall of the lower side of the blanking cavity 23 in a communicating manner, a supporting device 102 is arranged in the limiting groove 26, when the die 24 punches the workpiece 25, the supporting device 102 is supported at the lower end of the workpiece 25 with constant pressure, so that the workpiece 25 is prevented from being greatly deformed, and the supporting device 102 can assist the die 24 to punch the workpiece 25, when different shearing profiles at the cutting positions on the workpiece 25 are needed, only the die 24 needs to be replaced, and a corresponding female die does not need to be equipped, so that the production cost can be reduced.

Beneficially, the clamping plate 22 is provided with spring grooves 19 with downward openings, the spring grooves 19 are provided with downward openings, a pressure plate 17 is slidably provided in the spring grooves 19, the lower end of the pressure plate 17 can slide out of the spring grooves 19, a pressure spring 18 is fixedly connected between the upper end of the pressure plate 17 and the inner wall of the upper side of the spring groove 19, the pressure spring 18 is electrically connected to the driving device 101, the driving device 101 drives the clamping plate 22 to slide down and abut against the workpiece 25 through the screw 30, so that the workpiece 25 pushes the pressure plate 17 to slide into the spring grooves 19 and compress the pressure spring 18, after the pressure plate 17 completely slides into the spring grooves 19, the driving device 101 is energized through the pressure spring 18 and the transmission mode in the driving device 101 is changed, at this time, the driving device 101 no longer drives the clamping plate 22 to slide, when the pressure plate 17 on only one side is completely slid into the spring groove 19 and the pressure plate 17 on the other side is not completely slid into the spring groove 19, the driving device 101 continues to drive the clamping plate 22 on one side, which has not yet completely slid into the spring groove 19, to slide downwards, and the clamping plate 22 on the other side does not continue to slide downwards until the pressure plates 17 on both sides are completely slid into the spring groove 19, so as to ensure that the workpiece 25 is kept horizontal.

According to the embodiment, the driving device 101 is described in detail below, the driving device 101 includes a transmission cavity 31 disposed in an upper inner wall of the clamping cavity 21, a large belt wheel 57 is rotatably disposed in the transmission cavity 31, a motor 58 is fixedly connected in the large belt wheel 57, a motor 59 is fixedly disposed in a lower inner wall of the transmission cavity 31, a lower end of the motor 58 is in power connection with the motor 59, a right end of the transmission belt 53 is connected to the large belt wheel 57, a left end of the transmission belt 53 is connected to the blanking device 100, small belt wheels 56 are symmetrically and rotatably disposed on front and back sides of the large belt wheel 57, a connection belt 41 is connected between the large belt wheel 57 and the small belt wheels 56, a support shaft 29 is fixedly connected to a lower end of the small belt wheels 56, a lower end of the support shaft 29 is rotatably connected to an inner wall of a lower side of the transmission cavity 31, the upper ends of the two screw rods 30 extend into the meshing hole 33 respectively, the screw rods 30, the small belt wheel 56 and the support shaft 29 can rotate, the sliding gear 40 can be rotatably and slidably arranged in the meshing hole 33, the sliding gear 40 can be meshed and connected with the driven belt wheel 50, a connecting hole 32 with a downward opening is arranged in the sliding gear 40, the upper end of the screw rod 30 can extend into the connecting hole 32 and is connected with the sliding gear 40, the upper end of the sliding gear 40 is rotatably connected with a sliding shaft 34, through holes 35 with upward openings are symmetrically arranged in the inner wall of the upper side of the transmission cavity 31 in a front-back symmetrical mode and communicated with each other, an electromagnetic spring 39 is fixedly connected between the sliding shaft 34 and the inner wall of the through hole 35, the electromagnetic springs 39 on the front side and the rear side are electrically connected to the pressure springs 18 on the two sides respectively, the motor 59 is started, and the motor, the blanking device 100 is further driven by the transmission belt 53, and meanwhile, the large belt wheel 57 passes through the large belt wheel, the connection belt 41 drives the small belt wheel 56 to rotate, so as to drive the sliding gear 40 to rotate, and further drive the clamping plate 22 to slide by the screw 30, when the pressure plate 17 completely slides into the spring groove 19, the pressure spring 18 is compressed, so as to energize the corresponding electromagnetic spring 39, so as to drive the sliding shaft 34 to slide upwards, so as to drive the sliding gear 40 to slide upwards, so that the sliding gear 40 is disconnected from the small belt wheel 56 and the screw 30, and at this time, the screw 30 does not rotate any more.

Advantageously, the diameter of the large pulley 57 is larger than that of the small pulley 56, so that when the large pulley 57 is actively rotated, the small pulley 56 can be rotated by the connecting belt 41.

Beneficially, start switch 38 is fixedly connected to the upper end of sliding shaft 34, warning light 36 is connected to the front and back of the upper end of device main body 11 symmetrically, conducting block 37 is fixedly arranged in warning light 36, when start switch 38 contacts with conducting block 37, warning light 36 can be lighted, when warning light 36 on both sides is lighted, sliding gear 40 on both sides is disconnected with small belt wheel 56 and screw rod 30, and at the moment, both sides pressure plate 17 completely slides into spring groove 19, and at the moment, workpiece 25 is kept horizontal, and at the moment, workpiece 25 is blanked.

According to an embodiment, the blanking device 100 is described in detail below, the blanking device 100 includes a belt groove 60 disposed in the inner wall of the left side of the transmission cavity 31 and communicated with each other, a cavity 55 is disposed in the inner wall of the left side of the belt groove 60 and communicated with each other, a driven pulley 50 is rotatably disposed in the cavity 55, the left end of the driving belt 53 is connected to the driven pulley 50, a cantilever shaft 51 is fixedly connected to the driven pulley 50, the upper end of the cantilever shaft 51 is rotatably connected to the inner wall of the upper side of the cavity 55, a shaft sleeve 54 is rotatably and slidably disposed on the lower side of the driven pulley 50, a spline hole 52 is disposed in the shaft sleeve 54 and penetrates up and down, the lower end of the cantilever shaft 51 extends into the spline hole 52 and is in spline connection with the shaft sleeve 54, the upper end of the lead screw 42 extends into the cavity 55 and can extend into the spline hole, the lead screw 42 is rotatably connected to the device body 11, when the warning lights 36 on both sides are not all turned on, the shaft sleeve 54 is not connected to the lead screw 42, when the warning lights 36 on both sides are all turned on, the shaft sleeve 54 slides down and is connected to the lead screw 42, at this time, the large belt pulley 57 rotates and drives the driven belt pulley 50 to rotate through the transmission belt 53, and then the cantilever shaft 51 drives the shaft sleeve 54 to rotate, and further the lead screw 42 drives the die 24 to slide down and punch the workpiece 25.

Advantageously, a sliding plate 48 is slidably provided on the lower side of the driven pulley 50, the sliding plate 48 is rotatably connected to the shaft sleeve 54, the lower end of the sliding plate 48 is bilaterally symmetrical and fixedly connected with a connecting rod 48, the lower end of the connecting rod 48 extends into the blanking chamber 23, a buffer plate 45 is slidably provided on the lower side of the connecting rod 48, a groove 43 with an upward opening is provided in the buffer plate 45, a buffer spring 44 is fixedly connected between the lower end of the connecting rod 48 and the lower inner wall of the groove 43, two connecting springs 47 are fixedly connected between the lower end of the sliding plate 48 and the lower inner wall of the cavity 55, a limit groove 46 is provided in the upper inner wall of the blanking chamber 23 which is bilaterally symmetrical and communicated, the buffer plate 45 can slide into the limit groove 46, initially, the upper end of the die 24 abuts against the buffer plate 45, and the buffer plate, at this time, the sliding plate 48 and the shaft sleeve 54 are located at upper limit positions, at this time, the shaft sleeve 54 is not connected with the lead screw 42, at this time, the connecting spring 47 is in a stretched state, when the warning lamps 36 on both sides are all lighted, the connecting spring 47 is electrified, so that the connecting spring 47 is compressed, the connecting rod 48 and the shaft sleeve 54 are further driven to slide downwards, so that the shaft sleeve 54 is connected with the lead screw 42, at this time, the buffer spring 44 is compressed, at this time, the buffer plate 45 and the punch die 24 are not slid, at this time, the lead screw 42 rotates to drive the punch die 24 to slide downwards, so that the punch die 24 and the buffer plate 45 are separated from contact, and at this time, the buffer plate 45 is driven to slide downwards and slide into the punching cavity 23 under the elastic force of the buffer spring 44.

According to the embodiment, the supporting device 102 is described in detail below, the supporting device 102 includes one hundred sealed cavities 28 distributed in an annular array and communicated with each other and disposed in the inner wall of the lower side of the limiting groove 26, a supporting rod 27 is slidably disposed in the sealed cavity 28, the sealed cavity 28 is sealed by the supporting rod 27, the upper end of the supporting rod 27 abuts against the workpiece 25, an air pump 16 is fixedly disposed in the inner wall of the right side of the limiting groove 26, the lower end of the air pump 16 is fixedly connected with a detection box 13, a buffer cavity 15 with an upward opening is disposed in the detection box 13, the buffer cavity 15 is communicated with the air pump 16, the lower end of the air pump 16 is fixedly connected with an air pressure probe 14, the air pressure probe 14 can monitor the air pressure in the buffer cavity 15 in real time, and the air pump 16 can feed air or pump air into the buffer cavity 15 to control the air pressure in the buffer cavity 15 to, an air duct 12 is fixedly connected between the inner wall of the lower side of the sealed cavity 28 and the inner wall of the lower side of the buffer cavity 15, the sealed cavity 28 is communicated with the buffer cavity 15 through the air duct 12, so that the air pressure in the sealed cavity 28 is consistent with the air pressure in the buffer cavity 15, one hundred sealed cavities 28 are communicated with the buffer cavity 15 through the air duct 12, the die 24 slides downwards and punches the workpiece 25, the supporting rod 27 facing the die 24 slides downwards, other supporting rods 27 continue to support the workpiece 25, the air pressure in the sealed cavity 28 and the buffer cavity 15 is increased at the moment, the air pressure in the buffer cavity 15 and the sealed cavity 28 is detected through the air pressure probe 14, the air pump 16 is started, and the air in the buffer cavity 15 and the sealed cavity 28 is pumped out, and the air pressure in the buffer cavity 15 and the sealed cavity 28 is kept constant, and the support rod 27 sliding downwards can assist the punch 24 to punch the workpiece 25.

Advantageously, before blanking, the upper end surface of the supporting bar 27 is kept horizontal with the inner wall of the lower side of the clamping cavity 21, thus keeping the workpiece 25 horizontal.

The following describes in detail the use steps of a blanking die apparatus capable of reducing deformation of a workpiece with reference to fig. 1 to 7:

initially, the upper end of the supporting rod 27 is kept horizontal with the inner wall of the lower side of the clamping cavity 21, at this time, the clamping plate 22 is in the upper limit position, at this time, the lower end of the pressure plate 17 slides out of the spring groove 19, at this time, the sliding gear 40 is kept connected with the screw 30 and the small belt wheel 56, at this time, the starting switch 38 is not contacted with the conductive block 37, at this time, the punch 24 is in the upper limit position, at this time, the buffer plate 45 is located in the limiting groove 46, at this time, the sliding plate 48 and the shaft sleeve 54 are in the upper limit position, at this time, the screw 42 is.

When the punching die is used, a workpiece 25 is placed between the punching cavity 23 and the clamping cavity 21, the upper end of the supporting rod 27 abuts against the workpiece 25, the left end of the workpiece 25 cannot exceed the left end of the punching die 24, at this time, the motor 59 is started, the motor 58 drives the large belt pulley 57 to rotate, the driving belt 53 drives the driven belt pulley 50 to rotate, the shaft sleeve 54 is driven to rotate through the cantilever shaft 51, the lead screw 42 is not connected with the shaft sleeve 54, the shaft sleeve 54 is idle, the large belt pulley 57 rotates, the connecting belt 41 drives the small belt pulley 56 to rotate, the sliding gear 40 is driven to rotate, the screw 30 drives the clamping plate 22 to slide downwards until the clamping plate 22 abuts against the workpiece 25, the workpiece 25 pushes the pressure plate 17 to slide towards the spring groove 19 and compresses the pressure spring 18, after the pressure plate 17 completely slides into the spring groove 19, the electromagnetic spring 39 on the corresponding side is electrified, the slide shaft 34 is driven to slide upwards, the slide gear 40 is disconnected from the driven belt wheel 50 and the screw 30, the slide shaft 34 drives the starting switch 38 to slide upwards and contact with the conductive block 37, the warning lamp 36 is lightened, when the warning lamps 36 on two sides are lightened, the clamping plate 22 clamps the workpiece 25 and keeps the workpiece 25 in a horizontal state, the connecting spring 47 is electrified, the slide plate 48 is driven to slide downwards, the shaft sleeve 54 is connected with the screw rod 42, the connecting rod 48 slides downwards and compresses the buffer spring 44, the buffer plate 45 does not slide, the shaft sleeve 54 rotates and drives the stamping die 24 to slide downwards through the screw rod 42 and is disconnected from the buffer plate 45, the buffer plate 45 is driven to slide downwards and slide out of the limit groove 46 under the elastic force of the buffer spring 44, and the stamping die 24 slides downwards and punches the workpiece 25, and then the supporting rod 27 just opposite to the die 24 is pushed to slide downwards, other supporting rods 27 continue to support the workpiece 25, at this time, the air pressure in the sealed cavity 28 and the air pressure in the buffer cavity 15 are increased, at this time, the air pressure in the buffer cavity 15 and the sealed cavity 28 are detected through the air pressure probe 14, the air pump 16 is started, further, the air in the buffer cavity 15 and the sealed cavity 28 is pumped out, the air pressure in the buffer cavity 15 and the air pressure in the sealed cavity 28 are kept constant, at this time, the downward sliding supporting rod 27 can assist the die 24 to punch the workpiece 25, when the lower end of the die 24 exceeds the inner wall of the lower side of the clamping cavity 21, the motor 59.

The motor 59 is started reversely, the punch 24 is driven to ascend and separate from the workpiece 25, when the upper end of the punch 24 is in contact with the buffer plate 45, the connecting rod 48 and the sliding plate 48 are pushed to ascend, the shaft sleeve 54 is driven to separate from the screw rod 42, the punch 24 does not ascend at the moment, the buffer plate 45 is recovered in the limiting groove 46, the electromagnetic spring 39 is powered off at the moment, the sliding gear 40 is connected with the small belt wheel 56 and the screw rod 30 again, the clamping plate 22 is driven to ascend and separate from the workpiece 25, the punched workpiece 25 and the cut blanking are taken out, and the air pump 16 inflates the buffer cavity 15 and the sealed cavity 28 and enables the supporting rod 27 to return to the initial state.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a reducible work piece deformation blanking die equipment, includes the device main part, its characterized in that: a clamping cavity with a rightward opening is formed in the device main body, a blanking cavity with a leftward opening is formed in the inner wall of the left side of the clamping cavity in a communicated mode, a workpiece is placed between the blanking cavity and the clamping cavity, a driving device is arranged in the inner wall of the upper side of the clamping cavity, a clamping plate is arranged in the clamping cavity in a sliding mode, threaded holes with upward openings are formed in the clamping plate in a front-back symmetrical mode, the lower ends of two screw rods in the driving device respectively extend into the threaded holes in the two sides and are in threaded connection with the clamping plate, and the driving device drives the clamping plate to slide through the two screw rods and can clamp the workpiece; a blanking device is arranged in the inner wall of the upper side of the blanking cavity, the blanking device is connected with the driving device through a transmission belt, a stamping die is arranged in the blanking cavity in a sliding manner, the lower end of a screw rod in the blanking device extends into the blanking cavity and is in threaded connection with the stamping die, the driving device drives the blanking device through the transmission belt, the screw rod drives the stamping die to slide downwards and punch the workpiece, and the left end face of the workpiece cannot exceed the left end face of the stamping die; the inner wall of the lower side of the blanking cavity is internally provided with a limit groove in a communicated manner, a supporting device is arranged in the limit groove, when the workpiece is blanked by the stamping die, the supporting device is supported at the lower end of the workpiece under constant pressure, so that the workpiece can be prevented from being greatly deformed, the supporting device can assist the stamping die to blank the workpiece, when different shearing profiles at the blanking position on the workpiece are needed, only the stamping die needs to be replaced, a corresponding female die does not need to be equipped, and the production cost can be reduced; the clamping plate is internally provided with spring grooves with downward openings in a front-back symmetrical manner, a pressure plate can slide in the spring grooves, the lower end of the pressure plate can slide out of the spring grooves, a pressure spring is fixedly connected between the upper end of the pressure plate and the inner wall of the upper side of the spring groove, and the pressure spring is electrically connected to the driving device; the driving device comprises a transmission cavity arranged in the inner wall of the upper side of the clamping cavity, a large belt wheel is rotatably arranged in the transmission cavity, a motor is fixedly connected in the large belt wheel, a motor is fixedly arranged in the inner wall of the lower side of the transmission cavity, and the lower end of the motor is in power connection with the motor; the right end of the transmission belt is connected with the large belt wheel, and the left end of the transmission belt is connected with the blanking device; the front side and the rear side of the large belt wheel are symmetrically and rotatably provided with small belt wheels, a connecting belt is connected between the large belt wheel and the small belt wheels, the lower ends of the small belt wheels are fixedly connected with support shafts, and the lower ends of the support shafts are rotatably connected to the inner wall of the lower side of the transmission cavity; the small belt wheel is internally provided with meshing holes which are vertically communicated, the upper ends of the two screw rods respectively extend into the meshing holes, the screw rods, the small belt wheel and the support shaft can rotate, sliding gears can be rotatably and slidably arranged in the meshing holes and can be meshed and connected with the driven belt wheel, connecting holes with downward openings are formed in the sliding gears, and the upper ends of the screw rods can extend into the connecting holes and are connected with the sliding gears; the upper end of the sliding gear is rotatably connected with a sliding shaft, through holes with upward openings are symmetrically formed in the inner wall of the upper side of the transmission cavity in a front-back mode and are communicated with each other, electromagnetic springs are fixedly connected between the sliding shaft and the inner wall of the through holes, and the electromagnetic springs on the front side and the rear side are respectively and electrically connected with the pressure springs on the two sides; the diameter of the large belt wheel is larger than that of the small belt wheel, so that when the large belt wheel rotates actively, the small belt wheel can be driven to rotate through the connecting belt; the upper end of the sliding shaft is fixedly connected with a starting switch, the upper end of the device main body is symmetrical in front and back and is fixedly connected with a warning lamp, and a conductive block is fixedly arranged in the warning lamp; the blanking device comprises a belt groove communicated with the inner wall of the left side of the transmission cavity, a cavity is communicated with the inner wall of the left side of the belt groove, a driven belt wheel is rotatably arranged in the cavity, and the left end of the driving belt is connected to the driven belt wheel; a cantilever shaft is fixedly connected in the driven belt wheel, the upper end of the cantilever shaft is rotatably connected to the inner wall of the upper side of the cavity, a shaft sleeve is rotatably and slidably arranged on the lower side of the driven belt wheel, a spline hole is vertically communicated in the shaft sleeve, and the lower end of the cantilever shaft extends into the spline hole and is in spline connection with the shaft sleeve; the upper end of the screw rod extends into the cavity and can extend into the spline hole to be connected with the shaft sleeve spline, and the screw rod is rotatably connected to the device main body; a sliding plate is arranged on the lower side of the driven belt wheel in a sliding manner, the sliding plate is rotatably connected to the shaft sleeve, the lower ends of the sliding plates are bilaterally symmetrical and are fixedly connected with connecting rods, and the lower ends of the connecting rods extend into the blanking cavity; a buffer plate is arranged on the lower side of the connecting rod in a sliding manner, a groove with an upward opening is formed in the buffer plate, a buffer spring is fixedly connected between the lower end of the connecting rod and the inner wall of the lower side of the groove, and two connecting springs are fixedly connected between the lower end of the sliding plate and the inner wall of the lower side of the cavity; limiting grooves are symmetrically arranged in the inner wall of the upper side of the blanking cavity in a left-right mode and are communicated with each other, and the buffer plate can slide into the limiting grooves; the supporting device comprises one hundred sealing cavities which are distributed in an annular array and communicated with each other and are arranged in the inner wall of the lower side of the limiting groove, supporting rods are slidably arranged in the sealing cavities, the supporting rods seal the sealing cavities, and the upper ends of the supporting rods are abutted against the workpiece; an air pump is fixedly arranged in the inner wall of the right side of the limiting groove, the lower end of the air pump is fixedly connected with a detection box, a buffer cavity with an upward opening is arranged in the detection box, the buffer cavity is communicated with the air pump, the lower end of the air pump is fixedly connected with an air pressure probe, the air pressure probe can monitor the air pressure in the buffer cavity in real time, and the air pressure in the buffer cavity is controlled to be kept constant by feeding air or extracting air into the buffer cavity through the air pump; an air duct is fixedly connected between the inner wall of the lower side of the sealing cavity and the inner wall of the lower side of the buffer cavity, and the sealing cavity is communicated with the buffer cavity through the air duct, so that the air pressure in the sealing cavity is consistent with the air pressure in the buffer cavity; before blanking, the upper end face of the support rod is kept horizontal with the inner wall of the lower side of the clamping cavity, and therefore the workpiece is kept horizontal.