CN112355125B

CN112355125B - Workpiece stamping device

Info

Publication number: CN112355125B
Application number: CN202011255258.8A
Authority: CN
Inventors: 赵聚营
Original assignee: Chongqing City Tongliang District Jingyi Computer Accessories Co ltd
Current assignee: Chongqing City Tongliang District Jingyi Computer Accessories Co ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2023-05-05
Anticipated expiration: 2040-11-11
Also published as: CN112355125A

Abstract

The invention discloses a workpiece stamping device, which comprises a workbench, wherein an elastic lower die assembly is arranged on the workbench, an upper die assembly matched with the elastic lower die assembly is connected above the workbench through a telescopic device, an intermittent feeding assembly is arranged at the discharging tail end of the workbench, a traction structure is connected between the intermittent feeding assembly and the telescopic device, and the intermittent feeding assembly intermittently feeds plates on the workbench through the traction structure by the reciprocating motion of the telescopic device; a material guide hole positioned on the elastic lower die assembly and the intermittent feeding assembly is formed in the workbench, a feeding belt is arranged on one side below the material guide hole, and a turnover mechanism for turning over the workpiece guided out of the material guide hole by 180 degrees and then placing the workpiece on the feeding belt is arranged below the material guide hole; the upper die assembly and the elastic lower die assembly cut the plate to form a U-shaped part, and the intermittent feeding assembly moves the plate to move the U-shaped part into the material guide hole; compared with the prior art, the invention improves the processing efficiency and the transferring efficiency of the workpiece.

Description

Workpiece stamping device

Technical Field

The invention relates to the technical field of stamping, in particular to a workpiece stamping device.

Background

The stamping is a forming processing method for obtaining a workpiece (stamping part) with a required shape and size by applying external force to plates, strips, pipes, sectional materials and the like by using a press machine and a die to enable the plates, the strips, the pipes, the sectional materials and the like to generate plastic deformation or separation.

In the processing process of computer accessories, a U-shaped part is required to be processed, after a purchased whole plate is cut into a plurality of small blocks, the small blocks are processed into the U-shaped part through a die, then the U-shaped part is taken out and turned over 180 degrees and then placed in a transfer vehicle, and after a certain amount of the U-shaped part is collected in the transfer vehicle, the U-shaped part is transferred to the next process for processing, so that the working efficiency of the process is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a workpiece stamping device so as to solve the problem of low efficiency in the process of machining and transferring U-shaped workpieces in the prior art.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the workpiece stamping device comprises a workbench, wherein an elastic lower die assembly is arranged on the workbench, an upper die assembly matched with the elastic lower die assembly is connected above the workbench through a telescopic device, an intermittent feeding assembly is arranged at the discharging tail end of the workbench, a traction structure is connected between the intermittent feeding assembly and the telescopic device, and the intermittent feeding assembly intermittently feeds plates on the workbench through the traction structure by the reciprocating motion of the telescopic device;

the workbench is provided with a guide hole positioned on the elastic lower die assembly and the intermittent feeding assembly, one side below the guide hole is provided with a feeding belt, and a turnover mechanism which turns the workpiece guided out from the guide hole 180 degrees and then is arranged on the feeding belt is arranged below the guide hole;

the upper die assembly and the elastic lower die assembly cut the plate to form a U-shaped part, and the intermittent feeding assembly moves the plate to move the U-shaped part into the guide hole.

Working principle: placing a purchased whole plate on a workbench, enabling an upper die assembly to move towards an elastic lower die assembly by providing power for a telescopic device, cutting the plate to form small blocks through the upper die assembly and the elastic lower die assembly, pressing to form a U-shaped part, and placing the U-shaped part in a small hole left after the small blocks are cut on the plate after the U-shaped part is processed; the upper die assembly moves in the reverse direction through a traction structure in the moving process, and the plate is moved on the workbench along the feeding direction so as to move the next machining displacement on the plate to the elastic lower die assembly; simultaneously, the U-shaped part is moved into the material guide hole in the process of moving the plate; the U-shaped piece passes through the guide hole and is arranged on the turnover mechanism, and the U-shaped piece is turned over by 180 degrees by the turnover mechanism and then is arranged on the feeding belt to be conveyed to the next working procedure; the above work is then reciprocally performed to continuously process and transport the "U" shaped part.

Compared with the prior art, the invention has the following beneficial effects:

1. the workpiece stamping device is used for continuously cutting small blocks on a plate and then processing the small blocks into U-shaped workpieces through the installation and matching of the telescopic device, the elastic lower die assembly, the upper die assembly, the intermittent feeding assembly, the traction structure, the turnover mechanism and the feeding belt, and then transporting the U-shaped workpieces to the next working procedure after turning over for 180 degrees, so that the processing efficiency and the transportation efficiency of the U-shaped workpieces are greatly improved;

2. the intermittent feeding assembly is used for feeding the plates, the telescopic device is driven by the traction structure in the motion process, and the structure in the device is reasonably connected in a linkage way, so that the processing procedure can be continuously carried out, and the consumption of kinetic energy is reduced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a partial enlarged view of the portion B in fig. 1.

Detailed Description

The invention is described in further detail below by way of specific embodiments:

reference numerals in the drawings of the specification include: the automatic feeding device comprises a workbench 1, a telescopic device 2, a guide hole 3, a feeding belt 4, a lower die groove 5, an ejection spring 6, a top plate 7, a cutting perforation 8, a male die 9, a blanking cutter 10, a slag collecting box 11, a mounting hole 12, a ratchet wheel 13, a feeding top plate 14, a traction rod 15, a supporting rail 16, a rack 17, a pawl 18, a reset spring 19, a traction wire 20, a pulley 21, a supporting table 22, a screw rod 23, a turnover plate 24, a movable sleeve 25, a driving rod 26 and a limiting rod 27.

As shown in fig. 1, an embodiment of the invention provides a workpiece stamping device, which comprises a workbench 1, wherein an elastic lower die assembly is arranged on the workbench 1, an upper die assembly matched with the elastic lower die assembly is connected above the workbench 1 through a telescopic device 2, an intermittent feeding assembly is arranged at the discharging tail end of the workbench 1, a traction structure is connected between the intermittent feeding assembly and the telescopic device 2, and the intermittent feeding assembly intermittently feeds a plate on the workbench 1 through the traction structure by the reciprocating motion of the telescopic device 2; a guide hole 3 positioned on the elastic lower die assembly and the intermittent feeding assembly is formed in the workbench 1, a feeding belt 4 is arranged on one side below the guide hole 3, and a turnover mechanism for turning over a workpiece guided out of the guide hole 3 for 180 degrees and then placing the workpiece on the feeding belt 4 is arranged below the guide hole 3;

the upper die assembly and the elastic lower die assembly cut the plate to form a U-shaped part, and the intermittent feeding assembly moves the plate to move the U-shaped part into the guide hole 3.

Placing a purchased whole plate on a workbench 1, providing power for an expansion joint 2 to enable an upper die assembly to move towards an elastic lower die assembly, cutting the plate to form small blocks through the upper die assembly and the elastic lower die assembly, pressing the small blocks to form a U-shaped piece, and placing the U-shaped piece in a small hole left after the small blocks are cut on the plate after the U-shaped piece is processed; the telescopic device 2 drives the upper die assembly to reversely move, the upper die assembly moves the intermittent feeding assembly through the traction structure in the moving process, and the plate is moved on the workbench 1 along the feeding direction, so that the next processing displacement on the plate is moved to the elastic lower die assembly; simultaneously, the U-shaped part is moved into the material guide hole 3 in the process of moving the plate; the U-shaped part passes through the guide hole 3 and is arranged on the turnover mechanism, and the U-shaped part is turned by 180 degrees through the turnover mechanism and then is arranged on the feeding belt 4 to be conveyed to the next working procedure; the above work is then reciprocally performed to continuously process and transport the "U" shaped part.

According to the workpiece stamping device, small blocks are continuously cut on a plate material to be processed into U-shaped parts through the installation cooperation of the telescopic device 2, the elastic lower die assembly, the upper die assembly, the intermittent feeding assembly, the traction structure, the turnover mechanism and the feeding belt 4, and then the U-shaped parts are turned over for 180 degrees and then conveyed to the next working procedure, so that the processing efficiency and the transferring efficiency of the U-shaped parts are greatly improved; the intermittent feeding assembly is used for feeding the plates, the telescopic device 2 is driven by a traction structure in the motion process, and the structure in the device is reasonably connected in a linkage way, so that the processing procedure can be continuously carried out, and the consumption of kinetic energy is reduced.

As shown in fig. 1, according to another embodiment of the present invention, the workpiece stamping device further includes a structure optimization for the elastic lower die assembly and the upper die assembly, wherein the elastic lower die assembly includes a lower die groove 5 formed on the workbench 1, a top plate 7 slidably disposed in the lower die groove 5 is connected in the lower die groove 5 through a plurality of ejection springs 6, two cutting perforations 8 are formed on the workbench 1, and the two cutting perforations 8 are located on a feeding path of the workbench 1 and located on different sides of the lower die groove 5.

The upper die assembly that adopts includes the terrace die 9 that sets up with lower die cavity 5 cooperation, and terrace die 9 links to each other with the telescopic link of expansion bend 2 through the connector, and the both sides of terrace die 9 all are provided with the stock cutter 10 that links to each other with the connector is fixed, and the cutting end of stock cutter 10 all is located terrace die 9 bottom below.

The telescopic device 2 can be an air cylinder, a piston rod of the air cylinder extends to enable the male die 9 to move downwards, the two blanking knives 10 are firstly contacted with a plate on the workbench 1, a small block is cut on the plate, and a small hole is formed in the plate by the small block; the male die 9 is contacted with the small blocks, the middle parts of the small blocks are pressed into the lower die grooves 5, the top plate 7 moves downwards in the lower die grooves 5, and the small blocks form U-shaped parts in the lower die grooves 5 through the cooperation of the lower die grooves 5 and the male die 9; the expansion device 2 drives the male die 9 to move upwards, and in the process, the U-shaped part gradually moves out of the lower die cavity 5 under the action of the elastic restoring force of the ejection spring 6 until the top plate 7 is level with the working surface of the workbench 1, and the U-shaped part completely moves out of the lower die cavity 5; the intermittent feeding component is in contact with the plate on the workbench 1 at the moment, so that the plate moves towards the discharging end direction of the workbench 1, the plate is sleeved outside the U-shaped piece through the small hole in the moving process, the U-shaped piece moves along with the plate, the U-shaped piece moves to the position of the material guiding hole 3 and falls into the material guiding hole 3, and the plate moves to the next processing station at the moment; the U-shaped part falls on the turnover mechanism and turns over 180 degrees, then is placed on the feeding belt 4, and is transported to the next working procedure.

In the process that the male die 9 enters the lower die groove 5, two cutter blades 10 are embedded in the two cutting perforations 8 in a one-to-one correspondence manner, so that the cutter blades 10 are prevented from being limited; and also facilitates the introduction of the scraps produced by cutting into the cutting perforations 8 for removal.

In order to facilitate the collection and quick discharge of the scraps produced by cutting, the lower end of each cutting perforation 8 is horn-shaped to facilitate the discharge of the scraps from the cutting perforation 8, and a slag collecting box 11 which is positioned below the two cutting perforations 8 and communicated with the two cutting perforations is fixedly connected to the workbench 1; the generated scraps are collected by the slag collection bin 11.

Referring to fig. 1 and 2, according to another embodiment of the present invention, the workpiece stamping device further includes a mounting hole 12 formed at the discharging end of the table 1, the intermittent feeding assembly includes a ratchet 13 rotatably disposed in the mounting hole 12 and a feeding top plate 14 movably disposed in the mounting hole 12, a traction rod 15 rotatably connected to an eccentric position of the ratchet 13 is connected to the bottom of the feeding top plate 14, the feeding top plate 14 is slidably clamped to an inner wall of the mounting hole 12, and the traction structure is connected to the ratchet 13 to enable the ratchet 13 to rotate unidirectionally toward the discharging end of the table 1.

When the telescopic device 2 drives the upper die assembly to reciprocate up and down, the ratchet wheel 13 is made to rotate unidirectionally through the traction structure, so that the feeding top plate 14 reciprocates up and down in the mounting hole 12 to perform arc-shaped movement, and the movement of the feeding top plate 14 can be positioned and guided by connecting a clamping block on the feeding top plate 14 to be matched with an elliptical clamping groove formed in the inner wall of the mounting hole 12; the arrangement direction of the oval clamping grooves is the same as the moving direction of the feeding top plate 14 in the mounting hole 12, and in the embodiment, the unidirectional rotation direction of the ratchet wheel 13 is the clockwise rotation direction in fig. 2, so that the feeding top plate 14 intermittently moves the plate on the workbench 1 towards the discharging end direction of the workbench 1 in the moving process, and the U-shaped part is formed by continuously cutting the plate to form small blocks and then pressing the small blocks.

Referring to fig. 1 and 2, according to another embodiment of the present invention, the workpiece stamping device further includes a support rail 16 connected to the workbench 1, disposed below the mounting hole 12, a rack 17 slidably clamped on the support rail 16, the rack 17 is connected to the ratchet 13 through a pawl 18, the middle of the pawl 18 is hinged to the workbench 1, one end of the pawl 18 is engaged with the ratchet 13, the other end of the pawl is slidably abutted against teeth of the gear, a return spring 19 is connected between one end of the rack 17 and an inner wall of the support rail 16, and a traction wire 20 is connected between the other end of the rack 17 and the retractor 2.

When the upper die assembly is driven to move downwards by the telescopic device 2, the rack 17 is moved to a direction approaching to the telescopic device 2 by the traction wire 20, the return spring 19 is lengthened, the rack 17 drives the pawl 18 to swing reciprocally, and the ratchet 13 does not rotate in the process due to the matching relation between the pawl 18 and the ratchet 13; when the U-shaped part is processed, in the process that the upper die assembly is driven to move upwards by the telescopic device 2, the rack 17 moves reversely under the elastic reset action of the reset spring 19, the rack 17 drives the pawl 18 to reciprocate, the swinging direction of the pawl 18 changes at the moment, the ratchet 13 rotates through the cooperation of the pawl 18 and the ratchet 13, so that the traction rod 15 drives the feeding top plate 14 to move above the discharging end of the workbench 1, a distance is reserved between a plate on the workbench 1 and the discharging end of the workbench 1, the plate is moved to the next processing position, the processed U-shaped part moves into the guide hole 3, the ratchet 13 just rotates for half a circle, and a connecting point of the traction rod 15 and the ratchet 13 moves from the lowest point to the highest point on the ratchet 13; the rear telescopic device 2 continues to drive the upper die assembly to move upwards, the ratchet wheel 13 enables the feeding top plate 14 to move downwards through the traction rod 15, and the feeding top plate 14 just stops running after returning to the original position; the processing of the next "U" shaped piece can continue.

In order to facilitate reasonable arrangement of the traction wires 20, a pulley 21 is rotatably arranged at the top of the workbench 1, and a wire guide is arranged in the side wall of the workbench 1; one end of the wire guide is positioned above the working surface of the workbench 1, and the other end of the wire guide is positioned below the working surface of the workbench 1; the middle portion of the traction wire 20 is wound around the guide pulley and then passed through the wire guide.

Referring to fig. 1 and 3, according to another embodiment of the present invention, the workpiece stamping device further includes a support table 22 fixedly connected to the table 1 and located below the material guiding hole 3, where the support table 22 is located at one side of the feeding belt 4; the turnover mechanism comprises a screw rod 23 horizontally arranged on a supporting table 22 and a turnover plate 24 positioned below the guide hole 3 and above the screw rod 23, a movable sleeve 25 is sleeved on the screw rod 23, a driving rod 26 is rotatably connected to the movable sleeve 25, the driving rod 26 is rotatably connected with one end of the turnover plate 24, which is close to the feeding belt 4, the middle parts of two sides of the turnover plate 24 are rotatably connected with limiting rods 27 connected with the supporting table 22, the screw rod 23 is positioned between the two limiting rods 27, and the limiting rods 27 are obliquely arranged in a direction away from the feeding belt 4.

When the processed U-shaped piece moves into the guide hole 3, the U-shaped piece falls on the turnover plate 24 from the guide hole 3, the screw rod 23 is driven to rotate, the screw rod 23 can be driven to rotate by a stepping motor arranged in the supporting table 22, so that the movable sleeve 25 moves on the screw rod 23 in a direction away from the feeding belt 4, the movable sleeve 25 enables the turnover plate 24 to rotate around the two limiting rods 27 through the driving rod 26, so that the turnover plate 24 almost rotates for 180 degrees, and the U-shaped piece on the turnover plate 24 is reversely buckled on the feeding belt 4 and then conveyed to the next process; the stepping motor drives the screw rod 23 to reversely rotate, so that the movable sleeve 25 reversely moves on the screw rod 23, the overturning plate 24 reversely overturns back to the original position, and the next processed U-shaped part is waited to move into the material guide hole 3.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims

1. The workpiece stamping device comprises a workbench, and is characterized in that an elastic lower die assembly is arranged on the workbench, an upper die assembly matched with the elastic lower die assembly is connected above the workbench through a telescopic device, an intermittent feeding assembly is arranged at the discharging tail end of the workbench, a traction structure is connected between the intermittent feeding assembly and the telescopic device, and the intermittent feeding assembly intermittently feeds plates on the workbench through the traction structure by the reciprocating motion of the telescopic device;

the upper die assembly and the elastic lower die assembly cut the plate to form a U-shaped part, and the intermittent feeding assembly moves the plate to move the U-shaped part into the material guide hole;

the intermittent feeding assembly comprises a ratchet wheel rotatably arranged in the mounting hole and a feeding top plate movably arranged in the mounting hole, a traction rod rotatably connected with the eccentric position of the ratchet wheel is connected to the bottom of the feeding top plate, the feeding top plate is slidably clamped with the inner wall of the mounting hole, and the traction structure is connected with the ratchet wheel to enable the ratchet wheel to rotate unidirectionally towards the discharging end of the workbench;

the support rail is arranged below the mounting hole and connected with the workbench, the support rail is connected with the rack in a sliding clamping manner, the rack is connected with the ratchet wheel through the pawl, the middle of the pawl is hinged with the workbench, one end of the pawl is matched with the ratchet wheel, the other end of the pawl is in sliding contact with gear teeth on the gear, a reset spring is connected between one end of the rack and the inner wall of the support rail, and a traction wire is connected between the other end of the rack and the telescopic device.

2. A workpiece stamping device as defined in claim 1, wherein: the workbench is fixedly connected with a supporting table positioned below the guide hole, and the supporting table is positioned on one side of the feeding belt; the turnover mechanism comprises a screw rod which is horizontally rotated on the supporting table and a turnover plate which is positioned below the guide hole and above the screw rod, a movable sleeve is sleeved on the screw rod, a driving rod is rotationally connected to the movable sleeve, the driving rod is rotationally connected with one end of the turnover plate, which is close to the feeding belt, the middle parts of two sides of the turnover plate are rotationally connected with limiting rods which are connected with the supporting table, the screw rod is positioned between the two limiting rods, and the limiting rods are obliquely arranged in a direction away from the feeding belt.

3. A workpiece stamping device as defined in claim 1, wherein: the elastic lower die assembly comprises a lower die groove arranged on a workbench, a top plate arranged in the lower die groove in a sliding mode is connected with a plurality of ejection springs, two cutting perforations are arranged on the workbench, and the two cutting perforations are located on a feeding route of the workbench and located on different sides of the lower die groove.

4. A workpiece stamping device as defined in claim 3, wherein: the upper die assembly comprises a male die matched with the lower die groove, the male die is connected with a telescopic rod of the telescopic device through a connector, two sides of the male die are respectively provided with a cutting knife fixedly connected with the connector, and cutting ends of the cutting knives are respectively positioned below the bottom of the male die; when the male die is embedded into the lower die groove, the two blanking cutters are embedded into the two cutting perforations in a one-to-one correspondence.

5. A workpiece stamping device as defined in claim 4, wherein: the lower end of each cutting perforation is horn-shaped, and a slag collecting box which is positioned below the two cutting perforations and communicated with the two cutting perforations is fixedly connected to the workbench.