CN114769428A - Single-punch multi-die sheet metal part stamping automatic line - Google Patents

Abstract

The invention belongs to the technical field of stamping, and particularly relates to an automatic stamping line for single-stamping multi-die sheet metal parts; comprises a punching flanging machine; the punching flanging machine comprises a frame; the upper end of the rack is provided with a clamping mechanism; the clamping mechanism is used for clamping the pipe; a die core seat is arranged at one end of the rack far away from the clamping mechanism; the upper end of the rack is provided with a feeding mechanism; the feeding mechanism is used for clamping the pipe to move along the axial direction of the cavity mold core; the upper end of the frame is provided with a punch; the punch is used for forming a pre-hole in the surface of the pipe; according to the invention, through the arrangement of the polishing module, the polishing module can polish the burrs on the inner wall of the pre-hole punched by the punch, so that the burrs on the inner wall of the pre-hole are reduced, the limit flanging coefficient is reduced, the phenomenon of hole flanging cracking is reduced when the pre-hole is flanged, the flanging quality of the pipe is further improved, and the practicability of the pipe is improved.

Description

Single-punch multi-die sheet metal part stamping automatic line

Technical Field

The invention belongs to the technical field of stamping, and particularly relates to an automatic stamping line for single-stamping multi-die sheet metal parts.

Background

The stamping process is a metal processing method, which is based on the plastic deformation of metal, and utilizes a die and stamping equipment to apply pressure to a plate material, so that the plate material is plastically deformed or separated, and a part stamping part with certain shape, size and performance is obtained; the partial forming is a stamping process for changing the shape of a blank or a stamped part by using various local deformations with different properties, wherein the flanging process is one of the partial forming processes.

The existing pipe is punched and flanged by a punching and flanging machine, a pre-hole is punched on the surface of the pipe by a punch, and then the pre-hole is flanged by a flanging head, so that the flanging height is increased for producing parts with high vertical edges, the productivity is improved, the material is saved, and burrs often exist in the pre-hole punched by the punch; in punching flanging, the deformation degree is represented by the ratio of the aperture before flanging to the aperture after flanging, namely the flanging coefficient K, and the larger the K value is, the smaller the deformation degree is, the smaller the K value is, the larger the deformation degree is, and the more the flanging edge is likely to break; the maximum deformation degree sufficient value that the hole edge can not break during flanging is called as the allowable limit flanging coefficient, and the existence of burrs can directly cause the limit flanging coefficient to be large, so that the flanging hole is easy to crack, and the limitation of the punching flanging machine is further caused.

In view of this, the invention provides an automatic single-punch multi-die sheet metal part punching line, which solves the technical problems.

Disclosure of Invention

In order to make up for the defects of a punching flanging machine, the invention provides a single-punching multi-mode sheet metal part punching processing automation line, which is characterized in that a grinding module can grind burrs on the inner wall of a pre-hole punched by a punch through the arrangement of the grinding module, so that the burrs on the inner wall of the pre-hole are reduced, the limit flanging coefficient is reduced, the hole flanging cracking phenomenon is reduced when the pre-hole is flanged, the flanging quality of a pipe is improved, and the practicability of the single-punching multi-mode sheet metal part punching processing automation line is improved.

The technical scheme adopted by the invention for solving the technical problem is as follows: the invention relates to an automatic single-punching multi-die sheet metal part punching line, which comprises a punching flanging machine; the flanging machine that punches a hole includes:

a frame; the upper end of the rack is provided with a clamping mechanism; the clamping mechanism is used for clamping the pipe; a die core seat is arranged at one end of the rack far away from the clamping mechanism; the upper end of the rack is provided with a feeding mechanism; the feeding mechanism is used for clamping the pipe to move along the axial direction of the cavity mold core; the upper end of the frame is provided with a punch; the punch is used for forming a pre-hole in the surface of the pipe;

a cavity mold core; the cavity mold core is fixedly arranged on the mold core seat; punching holes and flanging holes are sequentially formed on the surface of the cavity die core along with the proximity of the cavity die core seat; the flanging hole is internally and slidably connected with a flanging head; a taper tongue rod is connected inside the cavity mold core in a sliding manner; the conical tongue rod is positioned between the flanging head and the mold core seat; one end of the conical tongue rod, which is far away from the flanging head, is connected with the die core seat through a hydraulic push rod; the flanging head is in sliding contact with the upper end of the conical tongue rod;

polishing the module; the grinding module is arranged on the cavity mold core; the polishing module is used for polishing the pre-hole formed in the pipe;

a controller; the controller is used for controlling the whole punching flanging machine to automatically operate.

Preferably, the sanding module comprises a sanding block; the surface of the cavity mold core is provided with a mounting hole; the mounting hole is positioned between the punching hole and the flanging hole; the bottom of the mounting hole is fixedly connected with an electromagnetic chuck; the polishing block is connected in the mounting hole in a sliding manner; and the grinding block is fixedly connected with the mounting hole through a spring.

Preferably, the surface of the cavity mold core is provided with an installation groove; a sliding block is connected in the mounting groove in a sliding manner; the mounting hole is formed in the upper end of the sliding block; the slider passes through drive module sliding connection in the mounting groove.

Preferably, the driving module comprises an electric push rod; the electric push rod is positioned in the cavity of the cavity mold core; one end of the electric push rod is fixedly connected with the inner wall of the cavity mold core, and the other end of the electric push rod is fixedly connected with the sliding block through a connecting rod.

Preferably, the driving module comprises a lead screw slider pair; a screw rod of the screw rod sliding block pair is rotationally connected with the side wall of the mounting groove; a screw rod of the screw rod sliding block pair extends out of the end face of one end of the cavity mold core, which is far away from the conical tongue rod; a servo motor is fixedly arranged on the end face of one end of the cavity mold core, which is far away from the conical tongue rod, through a bracket; the output end of the servo motor drives a screw rod of the screw rod sliding block pair to rotate through a worm wheel and a worm.

Preferably, the sanding module comprises a mounting frame; the mounting frame is arranged on the end face of one end of the cavity mold core, which is far away from the mold core seat; the mounting rack is rotatably connected with a rotating rod; the upper end of the rotating rod is fixedly connected with a grinding block; the lower end of the rotating rod is fixedly connected with a flexible shaft; one end of the flexible shaft, which is far away from the rotating rod, is fixedly connected with a turntable; the end surface of one end of the cavity mold core, which is far away from the mold core seat, is fixedly connected with a support rod; the supporting rod is positioned below the mounting rack; the turntable is rotatably connected with the supporting rod.

Preferably, a pneumatic push rod is arranged between the mounting frame and the cavity mold core; one end of the pneumatic push rod is fixedly connected to the cavity mold core, and the other end of the pneumatic push rod is fixedly connected with the mounting frame.

Preferably, the rotating rod comprises a first straight rod and a second straight rod; one end of the first straight rod is fixedly connected with the flexible shaft, and the other end of the first straight rod is provided with a first groove; the second straight rod is connected in the first groove in a sliding manner; the second straight rod is fixedly connected with the first groove through a spring; and an electromagnet is fixedly arranged at the bottom of the first groove.

Preferably, the surface of the outer ring of the turntable is fixedly connected with a bulge made of silica gel.

Preferably, the grinding block is cylindrical; one surface of the grinding block, which is far away from the supporting rod, is a hemispherical curved surface.

The invention has the following beneficial effects:

1. according to the invention, through the arrangement of the polishing module, the polishing module can polish the burrs on the inner wall of the pre-hole punched by the punch, so that the burrs on the inner wall of the pre-hole are reduced, the limit flanging coefficient is reduced, the phenomenon of hole flanging cracking is reduced when the pre-hole is flanged, the flanging quality of the pipe is further improved, and the practicability of the pipe is improved.

2. According to the invention, through the arrangement of the screw-rod sliding block pair, the driving module has the advantages of high transmission efficiency, stable movement and high sensitivity of the screw-rod sliding block pair, and the grinding block can be used for accurately and stably grinding burrs around the pre-hole, so that the grinding effect of the grinding block on the burrs is effectively improved, and the actual application effect of the invention is further improved.

3. According to the invention, through the arrangement of the turntable, when the feeding mechanism drives the pipe to move, the turntable can generate rolling friction with the inner wall of the pipe, so that the turntable rotates, the turntable can drive the rotating rod to rotate through the flexible shaft, the polishing block is driven by the rotating rod to rotate, the polishing block is contacted with and polished by burrs around the pre-hole, the falling of the burrs around the pre-hole is accelerated, the residual burrs are reduced, and the practicability of the invention is improved.

Drawings

The invention is further described with reference to the following figures and embodiments.

FIG. 1 is a perspective view of a punching and flanging machine with a screw-slider pair of the present invention;

FIG. 2 is a schematic structural diagram of a punching flanging machine provided with a screw rod sliding block pair in the invention;

FIG. 3 is an enlarged view at A in FIG. 2;

FIG. 4 is a schematic structural diagram of a punching and flanging machine provided with an electric push rod in the invention;

FIG. 5 is a perspective view of the punching and flanging machine with the turntable mounted in the present invention;

FIG. 6 is an enlarged view at B in FIG. 5;

FIG. 7 is a schematic structural view of a punching and flanging machine with a turntable installed in the invention;

in the figure: 1. a frame; 11. a punch; 12. a die core seat; 13. a feeding mechanism; 2. a cavity mold core; 21. punching; 22. flanging holes; 23. flanging the head; 231. a tapered tongue rod; 3. grinding blocks; 24. mounting holes; 241. an electromagnetic chuck; 25. mounting grooves; 26. a slider; 261. an electric push rod; 262. a connecting rod; 27. a screw slider pair; 271. a servo motor; 272. a worm; 273. a worm gear; 31. a mounting frame; 32. a rotating rod; 33. a flexible shaft; 34. a turntable; 35. a support bar; 36. a pneumatic push rod; 321. a first straight rod; 322. a second straight rod; 323. a first groove; 325. an electromagnet; 341. and (4) protruding.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, the single-punch multi-die sheet metal part stamping automatic line comprises a punching 21 flanging machine; the punching 21 flanger includes:

a frame 1; a clamping mechanism is arranged at the upper end of the frame 1; the clamping mechanism is used for clamping the pipe; a die core seat 12 is arranged at one end of the machine frame 1 far away from the clamping mechanism; the upper end of the frame 1 is provided with a feeding mechanism 13; the feeding mechanism 13 is used for clamping the pipe to move along the axial direction of the cavity mold core 2; the upper end of the frame 1 is provided with a punch 11; the punch 11 is used for forming a pre-hole on the surface of the pipe;

a cavity mold core 2; the cavity mold core 2 is fixedly arranged on the mold core seat 12; the surface of the cavity die core 2 is sequentially provided with a punching hole 21 and a flanging hole 22 along with the approach of the cavity die core seat 12; a flanging head 23 is connected in the flanging hole 22 in a sliding manner; a taper tongue rod 231 is connected inside the cavity mold core 2 in a sliding manner; the tapered tongue rod 231 is positioned between the flanging head 23 and the mold core seat 12; one end of the conical tongue rod 231, which is far away from the flanging head 23, is connected with the die core seat 12 through a hydraulic push rod; the flanging head 23 is in sliding contact with the upper end of the conical tongue rod 231;

polishing the module; the grinding module is arranged on the cavity mold core 2; the polishing module is used for polishing the pre-hole formed in the pipe;

a controller; the controller is used for controlling the whole punching 21 flanging machine to automatically operate;

the existing pipe is punched 21 and flanged by a punching 21 flanging machine, a pre-hole is punched on the surface of the pipe by a punch 11, and then the pre-hole is flanged by a flanging head 23, so that for producing parts with high vertical edges, the flanging height is increased, the productivity can be improved, the materials can be saved, and burrs often exist in the pre-hole punched by the punch 11; in the flanging of the punched hole 21, the deformation degree is represented by the ratio of the aperture before flanging to the aperture after flanging, namely the flanging coefficient K, and the larger the K value is, the smaller the deformation degree is, the smaller the K value is, the larger the deformation degree is, and the more the flanging edge is likely to break; the maximum deformation degree of the hole edge which can be achieved without breaking during flanging is called as allowable limit flanging coefficient, and the existence of burrs can directly cause large limit flanging coefficient and extremely easily cause hole flanging cracking;

when the device works, a worker firstly sleeves a pipe needing to be punched with a hole 21 and flanged on a cavity mold core 2, so that a clamping mechanism can clamp the pipe sleeved on the cavity mold core 2, the controller controls a punch 11 to downwards break the pipe above the punched hole 21 and enter the punched hole 21, a pre-hole is generated on the surface of the pipe, when the punch 11 is controlled by the controller to withdraw from the punched hole 21 for resetting, the controller firstly controls the clamping mechanism to loosen, then controls a feeding mechanism 13 to clamp the pipe and move along the axial direction of the cavity mold core 2, so that the pipe slides on the surface of the cavity mold core 2, the pre-hole on the surface of the pipe moves to a polishing module along with the pipe, at the moment, the controller controls the polishing module to polish the pre-hole on the inner wall of the pipe, burrs at the pre-hole position drop under the polishing of the polishing module, so that the limit flanging coefficient is reduced, and then controls the clamping mechanism to clamp the pipe to move in the reverse direction close to the flanging hole 22, the hole center of the pre-hole is opposite to the hole center of the flanging hole 22, the feeding mechanism 13 drives the pipe to stop, and at the moment, the controller controls the hydraulic push rod to push the conical tongue rod 231 to move towards the direction close to the flanging head 23, so that the flanging head 23 continuously extends out of the flanging hole 22 under the blocking of the inclined surface of the conical tongue rod 231, and the flanging head 23 outwards pushes out the pre-hole of the pipe, thereby forming a flanging;

according to the invention, through the arrangement of the polishing module, the polishing module can polish the burrs on the inner wall of the pre-hole punched by the punch 11, so that the burrs on the inner wall of the pre-hole are reduced, the limit flanging coefficient is reduced, the phenomenon of hole flanging cracking is reduced when the pre-hole is flanged, the flanging quality of the pipe is further improved, and the practicability of the pipe is improved.

As an embodiment of the present invention;

the grinding module comprises a grinding block 3; the surface of the cavity mold core 2 is provided with a mounting hole 24; the mounting hole 24 is positioned between the punched hole 21 and the flanging hole 22; the bottom of the mounting hole 24 is fixedly connected with an electromagnetic chuck 241; the polishing block 3 is connected in the mounting hole 24 in a sliding manner; the polishing block 3 is fixedly connected with the mounting hole 24 through a spring; when the pipe polishing device works, one surface of the polishing block 3, which is close to the electromagnetic chuck 241, is made of carbon steel, the electromagnetic chuck 241 is powered on in an initial state, so that the polishing block 3 compresses a spring to be deep into the mounting hole 24 under the action of the magnetic force of the electromagnetic chuck 241, after the punch 11 drills a pre-hole on the surface of a pipe, the controller controls the feeding mechanism 13 to drive the pipe to move, along with the continuous movement of the pipe towards the mounting hole 24, the controller controls the electromagnetic chuck 241 to be powered off at the moment, so that the polishing block 3 extends out of the mounting hole 24 under the action of the restoring force of the spring, the polishing block 3 is in contact with the inner wall of the pre-hole at the moment, as the width of the polishing block 3 is larger than the diameter of the pre-hole, when the feeding mechanism 13 drives the pipe to slide along the upper end of the polishing block 3, burrs on the inner wall of the pre-hole of the pipe generate friction with the polishing block 3, so that the burrs on the inner wall of the pre-hole are separated from the inner wall of the pipe under the polishing block 3, and then the controller controls the electromagnetic chuck 241 to be powered on, the polishing block 3 is enabled to penetrate into the mounting hole 24 under the action of the magnetic force of the electromagnetic chuck 241, so that the polishing block 3 is prevented from contacting with the inner wall of the pipe, the polishing damage of the polishing block 3 to the inner wall of the pipe is avoided, the smoothness of the inner wall of the pipe is improved, the abrasion of the polishing block 3 is reduced, the polishing effect of the polishing block 3 on the pre-hole burrs is improved, the actual application effect of the device is effectively improved, and finally the feeding mechanism 13 is controlled to drive the flanging hole 22 of the surface of the pipe to move for flanging.

The surface of the cavity mold core 2 is provided with an installation groove 25; a sliding block 26 is connected in the mounting groove 25 in a sliding manner; the mounting hole 24 is formed in the upper end of the sliding block 26; the sliding block 26 is connected in the mounting groove 25 in a sliding manner through a driving module; when the device works, the feeding mechanism 13 drives the pipe to move, when the pre-hole on the surface of the pipe is positioned above the polishing block 3, the controller controls the driving module to drive the sliding block 26 to move in the mounting groove 25, so that the driving module drives the polishing block 3 in the driving module to move back and forth repeatedly through the sliding block 26, the polishing block 3 repeatedly polishes burrs on the inner wall of the pre-hole, the falling of the burrs is accelerated, the polishing effect of the polishing block 3 on the burrs at the pre-hole is improved, the residue of the burrs at the pre-hole is reduced, the flanging coefficient is reduced, and the actual application effect of the device is effectively improved.

The drive module comprises an electric push rod 261; the electric push rod 261 is positioned in the cavity of the cavity mold core 2; one end of the electric push rod 261 is fixedly connected with the inner wall of the cavity mold core 2, and the other end of the electric push rod is fixedly connected with the slide block 26 through a connecting rod 262; when the device works, the feeding mechanism 13 drives the pipe to move, when the pre-hole on the surface of the pipe is positioned above the polishing block 3, the controller controls the electromagnetic chuck 241 to be powered off, so that the polishing block 3 positioned at the upper end of the sliding block 26 extends out of the mounting hole 24, and controls the electric push rod 261 to extend, so that the electric push rod 261 pushes the sliding block 26 to move in the same direction with the pipe through the connecting rod 262, the speed of the electric push rod 261 pushing the sliding block 26 to move is higher than the speed of the pipe to move, so that the polishing block 3 at the upper end of the sliding block 26 slides along the inner wall of the pipe, the polishing block 3 rubs with burrs at the pre-hole, so that the burrs at the pre-hole fall off under the friction of the polishing block 3, when the polishing block 3 passes through the pre-hole, the controller controls the electric push rod 261 to reset, so that the electric push rod 261 pulls the sliding block 26 to move in the opposite direction with the pipe through the connecting rod 262, so that the polishing block 3 moves in the opposite direction with the pipe, the burr at the pre-hole is polished again by the polishing block 3, and the process is repeated until the pre-hole is positioned at the other end of the mounting groove 25 under the driving of the pipe, and the controller controls the electric push rod 261 to complete reset; according to the invention, through the arrangement of the electric push rod 261, the electric push rod 261 can push the grinding block 3 to repeatedly grind the burrs at the pre-hole, so that the grinding effect of the grinding block 3 is improved, and the actual application effect of the electric polishing machine is effectively improved.

The driving module comprises a lead screw sliding block pair 27; a screw rod of the screw rod sliding block pair 27 is rotationally connected with the side wall of the mounting groove 25; the screw rod of the screw rod sliding block pair 27 extends out of the end surface of one end of the cavity mold core 2 far away from the taper tongue rod 231; a servo motor 271 is fixedly arranged on the end surface of one end of the cavity mold core 2, which is far away from the conical tongue rod 231, through a bracket; the output end of the servo motor 271 drives the screw rod of the screw rod sliding block pair 27 to rotate through the transmission of the worm wheel 273 and the worm 272; when the device works, the feeding mechanism 13 drives the pipe to move, and when the pre-hole on the surface of the pipe is positioned above the grinding block 3, the controller controls the electromagnetic chuck 241 to be powered off and controls the servo motor 271 to drive the worm 272 to rotate; the worm 272 drives the worm wheel 273 to rotate by meshing with the worm wheel 273, the worm wheel 273 drives the lead screw to synchronously rotate, the lead screw drives the slider 26 to move, so that the slider 26 drives the polishing block 3 on the slider to slide along the inner wall of the pipe at the pre-hole, before the pre-hole on the surface of the pipe is positioned above the flanging hole 22, the pipe is always in a moving state under the drive of the feeding mechanism 13, the polishing block 3 is driven by the servo motor 271 to move faster than the pipe, in the process that the polishing block 3 and the pipe move in the same direction, the moving speed of the polishing block 3 is higher than the moving speed of the pipe, so that the polishing block 3 rubs the burrs at the pre-hole to polish the burrs at the pre-hole, when the polishing block 3 goes across the pre-hole, the controller controls the servo motor 271 to rotate reversely, so that the polishing block 3 and the pipe move reversely, so that the polishing block 3 polishes the burrs at the pre-hole again, until the polishing block 3 passes through the pre-hole again, the controller controls the servo motor 271 to rotate in the forward direction, and the steps are repeated, so that burr residues at the pre-hole are reduced, and the polishing effect of the polishing block 3 is improved; according to the invention, through the arrangement of the screw-rod sliding-block pair 27, the driving module has the advantages of high transmission efficiency, stable movement and high sensitivity of the screw-rod sliding-block pair 27, the grinding block 3 can be ensured to accurately and stably grind the burrs around the pre-hole, the grinding effect of the grinding block 3 on the burrs is effectively improved, and the actual application effect of the invention is further improved.

As another embodiment of the present invention;

the sanding module comprises a mounting frame 31; the mounting frame 31 is arranged on the end surface of one end of the cavity mold core 2 far away from the mold core seat 12; a rotating rod 32 is rotatably connected to the mounting rack 31; the upper end of the rotating rod 32 is fixedly connected with a grinding block 3; the lower end of the rotating rod 32 is fixedly connected with a flexible shaft 33; one end of the flexible shaft 33 far away from the rotating rod 32 is fixedly connected with a turntable 34; the end surface of one end of the cavity mold core 2 away from the mold core seat 12 is fixedly connected with a support rod 35; the support rod 35 is positioned below the mounting frame 31; the turntable 34 is rotatably connected with the support rod 35; when the device works, when a worker sleeves a pipe needing to be punched with a 21 flanging on a cavity mold core 2, a turntable 34 is in rolling contact with the inner wall of the pipe, a controller controls a clamping mechanism to drive the pipe with a pre-hole to move towards the direction close to a grinding block 3, at the moment, the turntable 34 is in rolling contact with the inner wall of the pipe, the pipe pushes the turntable 34 to rotate, the turntable 34 drives a rotating rod 32 to rotate through a flexible shaft 33, the rotating rod 32 drives the grinding block 3 to rotate, the grinding block 3 is driven to rotate by the rotating rod 32, because the grinding block 3 is larger than the diameter of the pre-hole, when the pre-hole is driven by the pipe to be positioned at the grinding block 3, burrs at the pre-hole are in contact with the rotating grinding block 3, the grinding block 3 can drop the grinding, until the pre-hole passes through the grinding block 3, the controller controls a feeding mechanism 13 to drive the pipe to move towards the direction close to the mold core base 12, and at the moment, the inner wall of the pipe is in rolling contact with the turntable 34 to reversely rotate, the pre-hole is positioned at the polishing block 3 under the driving of the pipe, so that the polishing block 3 rotating reversely polishes burrs left around the pre-hole, and the two times of reverse polishing of the polishing block 3 not only reduce the burr left around the pre-hole, but also make the pre-hole smoother, thereby improving the polishing effect, when the pre-hole crosses the polishing block 3, the feeding mechanism 13 drives the pipe, so that the flanging treatment is carried out from the pre-hole to the flanging hole 22 on the surface of the pipe; according to the invention, through the arrangement of the rotary table 34, when the feeding mechanism 13 drives the pipe to move, the rotary table 34 can generate rolling friction with the inner wall of the pipe, so that the rotary table 34 rotates, the rotary table 34 can drive the rotary rod 32 to rotate through the flexible shaft 33, the grinding block 3 is driven by the rotary rod 32 to rotate, the grinding block 3 is in contact with and grinds the burrs around the pre-hole, the falling of the burrs around the pre-hole is accelerated, the residue of the burrs is reduced, and the practicability of the invention is improved.

A pneumatic push rod 36 is arranged between the mounting frame 31 and the cavity mold core 2; one end of the pneumatic push rod 36 is fixedly connected to the cavity mold core 2, and the other end of the pneumatic push rod is fixedly connected with the mounting frame 31; when the device works, the pushing speed of the pneumatic push rod 36 is the same as the speed of the feeding mechanism 13 driving the pipe to move, when the feeding mechanism 13 drives the pre-hole on the surface of the pipe to be positioned at the polishing block 3, burrs around the pre-hole are contacted with the polishing block 3 and polished, at the moment, the controller controls the pneumatic push rod 36 to extend, so that the pneumatic push rod 36 pushes the mounting frame 31 to move towards the direction away from the cavity mold core 2, and the polishing block 3 can polish the burrs around the pre-hole all the time in the process of moving along with the mounting frame 31 in the same direction with the pipe; when the elongation of the pneumatic push rod 36 is maximum, the controller controls the pneumatic push rod 36 to reset, so that the mounting frame 31 moves towards the direction close to the cavity mold core 2, and at the moment, the clamping mechanism drives the pipe and the mounting frame 31 to move in the same direction under the control of the controller, so that the grinding block 3 rotates reversely and grinds burrs around the pre-hole; according to the invention, through the arrangement of the pneumatic push rod 36, on one hand, the pneumatic push rod 36 can push the mounting frame 31 to move synchronously along with the pipe, so that the grinding block 3 can grind burrs around the pre-hole all the time, the grinding time of the grinding block 3 on the burrs around the pre-hole is increased, and the grinding effect of the grinding block 3 is improved, on the other hand, compared with the electric push rod 261 and the hydraulic push rod, the pneumatic push rod 36 has the characteristics of low cost and sensitive response, and the practicability of the invention is improved.

The rotating rod 32 comprises a first straight rod 321 and a second straight rod 322; one end of the first straight rod 321 is fixedly connected with the flexible shaft 33, and the other end of the first straight rod is provided with a first groove 323; the second straight rod 322 is connected in the first groove 323 in a sliding manner; the second straight rod 322 is fixedly connected with the first groove 323 through a spring; an electromagnet 325 is fixedly arranged at the bottom of the first groove 323; when in work, the electromagnet 325 is in a power-on state in an initial state, the electromagnet 325 adsorbs the second straight rod 322 to extrude the spring to enter the first groove 323, so that the grinding block 3 is not contacted with the inner wall of the pipe, when the feeding mechanism 13 drives the pre-hole on the surface of the pipe to be above the grinding block 3, the controller controls the electromagnet 325 to be powered off, so that the second straight rod 322 extends out of the first groove 323 under the driving of the restoring force of the spring, the grinding block 3 is pushed by the second straight rod 322 to contact with the burrs around the pre-hole, and the grinding block 3 moves synchronously with the pipe along with the extension of the pneumatic push rod 36, so that the grinding block 3 grinds the burrs around the pre-hole in the rotating process, therefore, the inner wall of the pipe is prevented from being polished by the polishing block 3 in a contact manner in the moving process of the pipe, the inner wall of the pipe is prevented from being damaged under the polishing of the polishing block 3, the smoothness of the inner wall of the pipe is improved, and the actual application effect of the invention is further improved; when the pneumatic push rod 36 is reset, the controller controls the electromagnet 325 to be electrified, so that the second straight rod 322 enters the first groove 323 under the adsorption of the electromagnet 325, at the moment, the polishing block 3 is not contacted with the inner wall of the pipe under the driving of the second straight rod 322, and the polished pre-hole is flanged at the flanging hole 22 by the clamping mechanism.

The surface of the outer ring of the turntable 34 is fixedly connected with a bulge 341 made of silica gel; when the device works, when a worker sleeves a pipe needing to be punched with a 21 flanging on the cavity mold core 2, the rotary table 34 is in rolling contact with the inner wall of the pipe, at the moment, the protrusion 341 on the surface of the rotary table 34 is in contact with the inner wall of the pipe and is extruded by the inner wall of the pipe to deform, so that the friction force between the rotary table 34 and the inner wall of the pipe is increased, when the feeding mechanism 13 drives the pipe to move, the inner wall of the pipe pushes the rotary table 34 to rotate by extruding the protrusion 341 on the surface of the rotary table 34, the rotating effect of the rotary table 34 is improved, and the actual application effect of the device is effectively improved.

The polishing block 3 is cylindrical; one surface of the grinding block 3, which is far away from the support rod 35, is a hemispherical curved surface; when the device works, when the rotating polishing block 3 polishes burrs on the periphery of a pre-hole, the periphery of the polishing block 3 is in contact with the inner wall of the pipe due to the fact that the pipe shakes, and damage caused by collision of a circular polishing piece and the inner wall of the pipe is reduced by arranging the polishing block 3 to be circular, so that the service life of the circular polishing block 3 is prolonged, and the smoothness of the inner wall of the pipe is improved; because the pipe is round, the planar polishing block 3 can be blocked by the inner walls of the two sides of the pre-hole of the pipe, so that the distance between the center of the polishing block 3 and the pre-hole is generated, the polishing effect of the polishing block 3 on burrs around the pre-hole is reduced, the polishing effect of the polishing block 3 on the burrs around the pre-hole is improved by making the surface of the polishing block 3, which is far away from the support rod 35, of the semicircular curved surface, so that the polishing block 3 cannot be blocked by the inner walls of the two sides of the pre-hole of the pipe, the distance between the center of the polishing block 3 and the pre-hole is avoided, and when the rotating polishing block 3 polishes the pre-hole, the top end of the semicircular curved surface of the polishing block 3 enters the pre-hole, so that the burrs close to the inner wall of the pre-hole are polished by the polishing block 3; the practicability of the invention is further improved.

The specific working process is as follows:

the working personnel firstly sleeve the pipe needing to punch 21 and turn up on the cavity die core 2, so that the clamping mechanism can clamp the pipe sleeved on the cavity die core 2, the punch 11 is controlled by the controller to downwards break the pipe above the punch 21 and enter the punch 21, so that the surface of the pipe generates pre-holes, when the punch 11 is controlled by the controller to withdraw from the punch 21 and reset, the controller firstly controls the clamping mechanism to loosen, then controls the feeding mechanism 13 to clamp the pipe and move along the axial direction of the cavity die core 2, so that the pipe slides on the surface of the cavity die core 2, so that the pre-holes on the surface of the pipe move to the polishing module along with the pipe, at the moment, the controller controls the polishing module to polish the pre-holes on the inner wall of the pipe, the pre-holes at the pre-holes fall under the polishing of the polishing module, thereby the limit turn-up coefficient is reduced, then the controller controls the clamping mechanism to clamp the pipe to move towards the reverse direction close to the turn-up hole 22, the hole center of the pre-hole is opposite to the hole center of the flanging hole 22, the feeding mechanism 13 drives the pipe to stop, and at the moment, the controller controls the hydraulic push rod to push the conical tongue rod 231 to move towards the direction close to the flanging head 23, so that the flanging head 23 continuously extends out of the flanging hole 22 under the blocking of the inclined plane of the conical tongue rod 231, and the flanging head 23 pushes the pre-hole of the pipe outwards, thereby forming a flanging; one surface of the polishing block 3 close to the electromagnetic chuck 241 is made of carbon steel, the electromagnetic chuck 241 is powered on in an initial state, so that the polishing block 3 compresses the spring to deeply penetrate into the mounting hole 24 under the action of the magnetic force of the electromagnetic chuck 241, after the punch 11 drills a pre-hole on the surface of the pipe, the controller controls the feeding mechanism 13 to drive the pipe to move along with the pipe moving towards the mounting hole 24 continuously, the controller controls the electromagnetic chuck 241 to be powered off at the moment, so that the polishing block 3 extends out of the mounting hole 24 under the action of the restoring force of the spring, the polishing block 3 is in contact with the inner wall of the pre-hole at the moment, as the width of the polishing block 3 is larger than the diameter of the pre-hole, when the feeding mechanism 13 drives the pipe to slide along the upper end of the polishing block 3, burrs on the inner wall of the pre-hole of the pipe rub against the polishing block 3, so that the burrs on the inner wall of the pre-hole are separated from the inner wall of the pipe under the polishing block 3, and then the controller controls the electromagnetic chuck 241 to be powered on, the polishing block 3 is inserted into the mounting hole 24 under the magnetic force of the electromagnetic chuck 241, so that the polishing block 3 is prevented from contacting the inner wall of the pipe.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a single punching multimode sheet metal component stamping processes transfer machine which characterized in that: comprises a punching and flanging machine (21); the punching (21) flanger includes:

a frame (1); the upper end of the rack (1) is provided with a clamping mechanism; the clamping mechanism is used for clamping the pipe; a die core seat (12) is arranged at one end of the rack (1) far away from the clamping mechanism; a feeding mechanism (13) is arranged at the upper end of the rack (1); the feeding mechanism (13) is used for clamping the pipe to move along the axial direction of the cavity mold core (2); the upper end of the frame (1) is provided with a punch (11); the punch (11) is used for forming a pre-hole on the surface of the pipe;

a cavity mold core (2); the cavity mold core (2) is fixedly arranged on the mold core seat (12); the surface of the cavity mold core (2) is sequentially provided with a punching hole (21) and a flanging hole (22) along with the approach of the cavity mold core seat (12); a flanging head (23) is connected in the flanging hole (22) in a sliding manner; a taper tongue rod (231) is connected inside the cavity mold core (2) in a sliding manner; the conical tongue rod (231) is positioned between the flanging head (23) and the mold core seat (12); one end of the conical tongue rod (231) far away from the flanging head (23) is connected with the mold core seat (12) through a hydraulic push rod; the flanging head (23) is in sliding contact with the upper end of the taper tongue rod (231);

polishing the module; the grinding module is arranged on the cavity mold core (2); the polishing module is used for polishing the prepared hole formed in the pipe;

a controller; the controller is used for controlling the whole punching (21) flanging machine to automatically operate.

2. The single-punching multi-die sheet metal part punching automatic line according to claim 1, characterized in that: the grinding module comprises a grinding block (3); the surface of the cavity mold core (2) is provided with a mounting hole (24); the mounting hole (24) is positioned between the punching hole (21) and the flanging hole (22); the bottom of the mounting hole (24) is fixedly connected with an electromagnetic chuck (241); the polishing block (3) is connected in the mounting hole (24) in a sliding manner; the polishing block (3) is fixedly connected with the mounting hole (24) through a spring.

3. The single-punching multi-die sheet metal part punching automatic line according to claim 2, characterized in that: the surface of the cavity mold core (2) is provided with a mounting groove (25); a sliding block (26) is connected in the mounting groove (25) in a sliding manner; the mounting hole (24) is formed in the upper end of the sliding block (26); the sliding block (26) is connected in the mounting groove (25) in a sliding mode through the driving module.

4. The single-punching multi-die sheet metal part punching automatic line according to claim 3, characterized in that: the drive module comprises an electric push rod (261); the electric push rod (261) is positioned in the cavity of the cavity mold core (2); one end of the electric push rod (261) is fixedly connected with the inner wall of the cavity mold core (2), and the other end of the electric push rod is fixedly connected with the sliding block (26) through a connecting rod (262).

5. The single-punching multi-die sheet metal part punching automatic line according to claim 3, characterized in that: the driving module comprises a lead screw slide block pair (27); a screw rod of the screw rod sliding block pair (27) is rotatably connected with the side wall of the mounting groove (25); a screw rod of the screw rod sliding block pair (27) extends out of the end face of one end, away from the conical tongue rod (231), of the cavity mold core (2); a servo motor (271) is fixedly arranged on the end face of one end, far away from the conical tongue rod (231), of the cavity mold core (2) through a support; the output end of the servo motor (271) drives a screw rod of the screw rod sliding block pair (27) to rotate through the transmission of a worm wheel (273) and a worm (272).

6. The single-punching multi-die sheet metal part punching automatic line according to claim 1, characterized in that: the sanding module comprises a mounting frame (31); the mounting rack (31) is mounted on the end face of one end, away from the die core seat (12), of the cavity die core (2); a rotating rod (32) is rotatably connected to the mounting rack (31); the upper end of the rotating rod (32) is fixedly connected with a grinding block (3); the lower end of the rotating rod (32) is fixedly connected with a flexible shaft (33); one end of the flexible shaft (33) far away from the rotating rod (32) is fixedly connected with a turntable (34); a support rod (35) is fixedly connected to the end surface of one end of the cavity mold core (2) far away from the mold core seat (12); the supporting rod (35) is positioned below the mounting rack (31); the rotary table (34) is rotatably connected with the support rod (35).

7. The single-punching multi-die sheet metal part punching automatic line according to claim 6, characterized in that: a pneumatic push rod (36) is arranged between the mounting frame (31) and the cavity mold core (2); one end of the pneumatic push rod (36) is fixedly connected to the cavity mold core (2), and the other end of the pneumatic push rod is fixedly connected with the mounting frame (31).

8. The single-punching multi-die sheet metal part punching automatic line according to claim 7, characterized in that: the rotating rod (32) comprises a first straight rod (321) and a second straight rod (322); one end of the first straight rod (321) is fixedly connected with the flexible shaft (33), and the other end of the first straight rod is provided with a first groove (323); the second straight rod (322) is connected in the first groove (323) in a sliding manner; the second straight rod (322) is fixedly connected with the first groove (323) through a spring; an electromagnet (325) is fixedly arranged at the bottom of the first groove (323).

9. The single-punching multi-die sheet metal part punching automatic line according to claim 8, characterized in that: the surface of the outer ring of the turntable (34) is fixedly connected with a bulge (341) made of silica gel.

10. The single-punching multi-die sheet metal part punching automatic line according to claim 9, characterized in that: the polishing block (3) is cylindrical; one surface of the polishing block (3) far away from the support rod (35) is a hemispherical curved surface.

Images