CN111745015A

CN111745015A - Double-station stamping method for thin plate

Info

Publication number: CN111745015A
Application number: CN202010526532.4A
Authority: CN
Inventors: 应金宝
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-10-09

Abstract

The invention discloses a sheet double-station stamping method which is characterized by comprising the following steps of: step S1, placing a thin plate to be punched on a side punching station of the punching base; step S2, punching the side punching station, and simultaneously, unloading the thin plate which is punched last time by the upper punching station and putting a new thin plate to be punched again; step S3, punching the side punching station, and simultaneously, unloading the thin plate which is punched last time by the upper punching station and putting a new thin plate to be punched again; and step S4, repeating the steps S1 to S3, and realizing double-station continuous stamping of the thin plate on the stamping base. The invention provides a double-station sheet stamping method, wherein the top and the side of a stamping base are respectively provided with a stamping station, so that the sheet stamping die provided by the invention is provided with two stamping stations, the double-station continuous stamping of a sheet is realized, and the stamping efficiency is improved.

Description

Double-station stamping method for thin plate

Technical Field

The invention relates to the field of stamping, in particular to a thin plate double-station stamping method.

Background

In production and life, many products are formed by stamping metal sheets. In the process of stamping the thin plate, an upper die and a lower die of stamping equipment are needed to stamp the plate into a specific shape, and then the stamped plate is taken out. The existing thin plate stamping die is generally vertically arranged, only has one stamping station, can only place a group of plates when the plates are stamped, and takes out the plates after the stamping is finished, so that the stamping efficiency is low.

Therefore, the chinese utility model with the prior publication No. CN110421045A discloses "a sheet punching apparatus and a punching method", wherein the sheet punching apparatus includes: the device comprises a stamping body, a base, a hydraulic cylinder, an upper die, a lower die, a purging nozzle, a high-temperature air source and a controller; wherein: the stamping body is fixed on the base; the upper die and the lower die are arranged in the stamping body, the lower die is fixed at the upper end of the base, the upper die is oppositely arranged above the lower die, and the upper die is connected with the stamping body through the hydraulic cylinder; the upper end of the lower die is provided with a stamping groove, and the lower end of the upper die is provided with a stamping bulge matched with the stamping groove; the purging nozzle is fixed on the inner side of the stamping body and connected with the high-temperature gas source, and high-temperature gas in the purging nozzle is sprayed on the thin plate between the upper die and the lower die; the controller is electrically connected with the switch of the high-temperature gas source and is used for controlling the on-off of the high-temperature gas source; the controller is electrically connected with the hydraulic cylinder and used for controlling the action of the hydraulic cylinder. The sheet stamping method comprises the following steps: 1) placing the thin plate in a thin plate stamping device, controlling a hydraulic cylinder to execute stamping action, and stamping the thin plate into a target shape; 2) after the sheet is stamped, controlling a high-temperature gas source to be started, and blowing the surface of the sheet; 3) and after the purging is finished, controlling the hydraulic cylinder to act to perform pressure maintaining on the punched sheet part.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, and provides a thin plate double-station stamping method which can realize continuous and efficient stamping of a thin plate.

The technical scheme adopted by the invention for solving the technical problems is as follows: a sheet double-station stamping method is characterized by comprising the following steps:

step S1, placing the thin plate to be punched in the side punching channel, wherein a first air pump generates negative pressure in the cavity of the side fixed die, so that the thin plate in the side punching channel is close to the cavity of the side fixed die, and meanwhile, the electromagnet in the side fixed die is electrified, so that the thin plate is accurately positioned in the cavity of the side fixed die;

step S2, a punching motor drives a rotating disk to rotate, on one hand, an inclined abutting surface at the bottom of the rotating disk pushes a second punching column to move downwards, a transmission rack on the second punching column drives a second gear to rotate, the second gear drives a coaxial first gear to rotate, the first gear drives a punching rack to slide towards the side punching channel direction, a side moving mold on the punching rack and a side fixed mold positioned at the side punching channel are matched, the side moving mold punches a thin plate in the side fixed mold, on the other hand, a first spring jacks up an upper mold plate, the first punching column moves upwards under the action of the first spring, the upper moving mold leaves the upper fixed mold, a second air pump blows air to blow the thin plate which is punched last time in the upper fixed mold to unload, then, the second air pump generates negative pressure at the cavity of the upper fixed mold, and a new thin plate to be punched is placed in the cavity of the upper fixed mold;

step S3, the punching motor drives the rotating disc to rotate continuously, at the moment, the rotating disc pushes the first punching column to move downwards, the first spring is compressed, the upper moving die moves downwards to punch the thin plate in the upper fixed die, meanwhile, the second spring pushes the second punching column to move upwards, the transmission rack on the second punching column drives the second gear to rotate reversely, so that the punching rack moves towards the outer direction of the punching base, in the initial stage of die opening of the side moving die and the side fixed die, the electromagnet is powered off, the first air pump blows air, and the punched thin plate in the side fixed die falls into a blanking channel which is arranged on the punching base and communicated with the cavity of the side fixed die;

and step S4, repeating the steps S1 to S3, and realizing double-station continuous stamping of the thin plate on the stamping base.

As a modification, a first ball is disposed at the upper end of the first punching column, a second ball is disposed at the upper end of the second punching column, an annular slide is formed on the abutting surface of the rotating disk, the first ball and the second ball abut against the annular slide, and in the steps S2 and S3, the first ball on the first punching column and the second ball on the second punching column roll in the annular slide.

And then, in the rotation process of the stamping motor, when the first stamping column is located at the lowest position or the second stamping column is located at the lowest position, the stamping motor has start-stop time, and the start-stop time is 1-5 seconds.

And the highest part and the lowest part of the annular slide way are respectively provided with equidistant arc sections.

Compared with the prior art, the invention has the advantages that: according to the invention, the two punching stations are respectively arranged on the top and the side of the punching base, so that the sheet punching die provided by the invention has two punching stations, the double-station continuous punching of a sheet is realized, and the punching efficiency is improved.

Drawings

FIG. 1 is a block diagram of a sheet double-station stamping method according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a thin plate double-station stamping device in an embodiment of the invention;

FIG. 3 is a schematic view of the first and second gears on the shaft of FIG. 2;

fig. 4 is a schematic structural view of an annular slide according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

First, a brief description will be given of a thin plate double-station punching device according to an embodiment of the present invention.

As shown in fig. 2 and 3, the thin plate double-station stamping device in the embodiment of the present invention includes a stamping base 1, an upper fixed die 21, a guide post 24, an upper die plate 23, an upper movable die 22, a side stamping table 12, a side fixed die 31, a side movable die 32, a first spring 25, a second spring 523, a first air pump 41, a second air pump 42, an electromagnet 33, a stamping motor 7, a rotating disk 8, a first stamping column 51, a second stamping column 52, a first ball 511, a second ball 521, a transmission rack 524, and a stamping rack 35.

Wherein, the upper fixed die 21 is arranged on the upper side surface of the stamping base 1, the guide post 24 is erected on the upper side surface of the stamping base 1, the upper die plate 23 is arranged on the guide post 24 in a sliding manner, the upper moving die 22 is arranged on the upper die plate 23, the first spring 25 is sleeved on the guide post 24, the upper end of the first spring 25 is abutted against the upper die plate 23, the lower end of the first spring 24 is abutted against the stamping base 1, the side stamping table 12 is arranged on the side wall of the stamping base 1, a side stamping channel 13 is formed between the side stamping table 12 and the side wall of the stamping base 1, the side fixed die 31 is arranged on the side stamping table 12, the first air pump 41 is communicated with the first air pipe 411, the first air pipe 411 is communicated with the cavity of the side fixed die 31, the electromagnet 33 is arranged in the side fixed die 31, and the sheet entering the side stamping channel 13 can be conveniently adsorbed in, the thin plate can be accurately positioned; in addition, a stamping slideway 11 is arranged in the stamping base 1, a side moving die 32 is arranged in the stamping slideway 11 in a sliding manner, a stamping motor 7 is arranged outside the stamping base 1, the output end of the stamping motor 7 is provided with a rotating disk 8, the lower side surface of the rotating disk 8 is an inclined abutting surface 81, a first stamping column 51 and a second stamping column 52 are vertically arranged below the abutting surface 81 in a sliding manner, the upper end of the first stamping column 51 acts on one end of the abutting surface 81, the lower end of the first stamping column 51 is fixedly connected to the upper template 23, the upper end of the second stamping column 52 acts on the other end of the abutting surface 81, and the lower end of the second stamping column 52 is arranged on the stamping base 1 in a sliding manner; in addition, a pressing ring 522 is formed at the lower end of the second punching column 52, a second spring 523 is sleeved on the second punching column 52, the upper end of the second spring 523 abuts against the pressing ring 522, the lower end of the second spring 523 abuts against the punching base 1, a transmission rack 524 is arranged in the middle of the second punching column 52 along the length direction of the second punching column 52, a rotating shaft 63 is transversely and rotatably arranged at the transmission rack 524, a first gear 61 is arranged at one end of the rotating shaft 63, a second gear 62 meshed with the transmission rack 524 is arranged at the other end of the rotating shaft 63, a punching rack 35 meshed with the first gear 61 is arranged in the punching slideway 11, the punching rack 35 is connected with the side moving die 32, a guide block 14 is arranged on the punching base 1, and the punching rack 35 is slidably arranged on the guide block 14, so that the moving stability of the punching rack 35 is improved.

Meanwhile, a blanking channel 15 is arranged on the stamping base 1, the blanking channel 15 is communicated with a cavity of the side fixed die 31, and by arranging the blanking channel 15, after the stamping of the thin plate in the side fixed die 31 is completed, when the side movable die 32 leaves the side fixed die 31, the first air pump 41 blows air, and the thin plate stamped in the side fixed die 31 can fall into the blanking channel 15 to be unloaded.

In addition, a second air pump 42 is arranged on the stamping base 1, the second air pump 42 is communicated with a second air pipe, the second air pipe is communicated with the cavity of the upper fixed die 21, and after the stamping of the thin plate on the upper fixed die 21 is completed, the second air pump 42 blows air to facilitate the discharging of the thin plate in the upper fixed die 21.

In addition, the upper end of the first punching column 51 and the upper end of the second punching column 52 are preferably connected with the abutting surface 81 of the rotating disc 8 respectively, a first spherical body 511 is arranged at the upper end of the first punching column 51, a second spherical body 521 is arranged at the upper end of the second punching column 52, furthermore, the first spherical body 511 is in spherical hinge joint with the upper end of the first punching column 51, the second spherical body 521 is in spherical hinge joint with the upper end of the second punching column 52, an annular slide way 811 is formed on the abutting surface 81 of the rotating disc 8, the first spherical body 511 and the second spherical body 521 abut against the annular slide way 811, and the friction effect of the first punching column 51 and the second punching column 52 on the abutting surface 81 is reduced by the arrangement of the spherical bodies and the annular slide way 811, and the movement tracks of the first spherical body 511 and the second spherical body 521 are convenient to limit.

As shown in fig. 1, the invention discloses a thin plate double-station stamping method, which can be refined into three main stamping steps, namely, step S1, placing a thin plate to be stamped on a side stamping station of a stamping base 1; step S2, stamping at the side stamping station, unloading the sheet stamped at the last time at the upper stamping station, and putting a new sheet to be stamped again; and step S3, punching the thin plate at the side punching station, unloading the thin plate which is punched at the previous time at the upper punching station, and putting a new thin plate to be punched again.

Specifically, the sheet double-station stamping method is characterized by comprising the following steps of:

step S1, placing the thin plate to be punched in the side punching channel 13, wherein the first air pump 41 generates negative pressure in the cavity of the side fixed die 31, so that the thin plate in the side punching channel 13 is drawn to the cavity of the side fixed die 31, and meanwhile, the electromagnet 33 in the side fixed die 31 is electrified, so that the thin plate is accurately positioned in the cavity of the side fixed die 31;

step S2, the punching motor 7 drives the rotating disc 8 to rotate, on one hand, the inclined abutting surface at the bottom of the rotating disc 8 pushes the second punching column 52 to move downwards, the transmission rack 524 on the second punching column 52 drives the second gear 62 to rotate, the second gear 62 drives the coaxial first gear 61 to rotate, the first gear 61 drives the punching rack 35 to slide towards the side punching channel 13, the side moving mold 32 on the punching rack and the side fixed mold 31 located at the side punching channel are matched, the side moving mold 32 punches the thin plate in the side fixed mold 31, on the other hand, the first spring 25 jacks up the upper mold plate 23, the first punching column 51 moves upwards under the action of the first spring 25, the upper moving mold 22 leaves the upper fixed mold 21, the second air pump 42 blows air to blow up the thin plate punched last time in the upper fixed mold 21 to unload, and then the second air pump 42 generates negative pressure at the cavity of the upper fixed mold 21, a new thin plate to be punched is placed in the cavity of the upper fixed die 21;

step S3, the punching motor 7 drives the rotating disc 8 to rotate continuously, at this time, the rotating disc 8 pushes the first punching column 51 to move downwards, the first spring 25 is compressed, the upper movable die 22 moves downwards to punch the thin plate in the upper fixed die 21, meanwhile, the second spring 523 pushes the second punching column 52 to move upwards, the transmission rack 524 on the second punching column 52 drives the second gear 62 to rotate reversely, so that the punching rack 35 moves towards the outer direction of the punching base 1, at the initial stage of die opening of the side movable die 32 and the side fixed die 31, the electromagnet 33 is powered off, the first air pump 41 blows air, and the thin plate punched in the side fixed die 31 falls into the blanking channel 15 which is arranged on the punching base and communicated with the cavity of the side fixed die;

and step S4, repeating the steps S1 to S3, and realizing double-station continuous stamping of the thin plate on the stamping base 1.

Here, since the first ball 511 is disposed at the upper end of the first punching column 51, the second ball 521 is disposed at the upper end of the second punching column 52, the annular slide 811 is formed on the abutting surface 81 of the rotating disk 8, and the first ball 511 and the second ball 521 abut against the annular slide 811, in steps S2 and S3, the first ball 511 on the first punching column 51 and the second ball 521 on the second punching column 52 roll in the annular slide 811.

In addition, in order to enable the thin plate to have a pressure maintaining function in the stamping process, the rotation of the stamping motor 7 can be controlled, and specifically, in the rotation process of the stamping motor 7, when the first stamping column 51 is located at the lowest position or the second stamping column 52 is located at the lowest position, the stamping motor 7 has a start-stop time which is 1-5 seconds; alternatively, the track of the circular slideway 811 is designed, specifically, as shown in fig. 4, an upper arc-shaped section 813 may be arranged at the highest position of the circular slideway 811, a lower arc-shaped section 812 may be arranged at the lowest position of the circular slideway 811, and the upper arc-shaped section 813 and the lower arc-shaped section 812 have arc-shaped sections with equal distance, wherein the distance of the arc-shaped sections refers to the shortest distance from each point on the circular slideway 811 to the rotation center of the rotating disk 8.

In the double-station sheet stamping process, the first stamping column 51 and the second stamping column 52 synchronously move in a coordinated manner, and the second stamping column 52 synchronously moves upwards while the first stamping column 51 moves downwards, so that in the process of stamping the sheet in the fixed die 21 on the stamping base 1, the sheet stamped in the fixed die 31 at the side part of the stamping base 1 is unloaded simultaneously; the second punching column 52 moves downwards and simultaneously the first punching column 51 moves upwards synchronously, so that the thin plate punched last time in the fixed mold 21 on the punching base 1 is synchronously unloaded while the thin plate in the fixed mold 31 on the punching base 1 is punched. Therefore, the invention fully utilizes the unloading time in the stamping process, so that the sheet can be stamped while the sheet is unloaded, and the stamping efficiency of the sheet is improved.

In conclusion, the stamping base 1 is provided with the two stamping stations at the top and the side respectively, so that the sheet stamping die provided by the invention has the two stamping stations, the continuous stamping of the sheet at the two stations is realized, and the stamping efficiency is improved.

Claims

1. A sheet double-station stamping method is characterized by comprising the following steps:

step S1, placing the thin plate to be punched in the side punching channel (13), wherein a first air pump (41) generates negative pressure in a cavity of the side fixed die (31), so that the thin plate in the side punching channel (13) is close to the cavity of the side fixed die (31), and meanwhile, an electromagnet (33) in the side fixed die (31) is electrified, and the thin plate is accurately positioned in the cavity of the side fixed die (31);

step S2, a punching motor (7) drives a rotating disc (8) to rotate, on one hand, an inclined abutting surface (81) at the bottom of the rotating disc (8) pushes a second punching column (52) to move downwards, a transmission rack (524) on the second punching column (52) drives a second gear (62) to rotate, the second gear (62) drives a coaxial first gear (61) to rotate, the first gear (61) drives a punching rack (35) to slide towards the side punching channel (13), a side moving die (32) on the punching rack (35) and a side fixed die (31) located at the side punching channel (13) are matched, the side moving die (32) punches a thin plate in the side fixed die (31), on the other hand, a first spring (25) jacks up an upper die plate (23), the first punching column (51) moves upwards under the action of the first spring (25), and the upper moving die (22) leaves the upper fixed die (21), the second air pump (42) blows air to blow up the sheet which is punched last time in the upper fixed die (21) for discharging, then the second air pump (42) generates negative pressure at the cavity of the upper fixed die (21), and a new sheet to be punched is placed in the cavity of the upper fixed die (21);

step S3, a punching motor (7) drives a rotating disc (8) to continue rotating, at the moment, the rotating disc (8) pushes a first punching column (51) to move downwards, a first spring (25) is compressed, an upper movable die (22) moves downwards to punch a thin plate in an upper fixed die (21), meanwhile, a second spring (523) pushes a second punching column (52) to move upwards, a transmission rack (524) on the second punching column (52) drives a second gear (62) to rotate reversely, so that a punching rack (35) moves towards the outer direction of a punching base (1), in the initial stage of opening a side movable die (32) and a side fixed die (31), an electromagnet (33) loses power, a first air pump (41) blows air, and the punched thin plate in the side fixed die (31) falls into a blanking channel (15) which is communicated with a cavity of the side fixed die (31) on the punching base (1);

and step S4, repeating the steps S1 to S3, and realizing double-station continuous stamping of the thin plate on the stamping base (1).

2. The thin plate double station stamping method according to claim 1, wherein: the upper end of the first stamping column (51) is provided with a first ball body (511), the upper end of the second stamping column (52) is provided with a second ball body (521), an annular slide way (811) is formed on the abutting surface (81) of the rotating disc (8), the first ball body (511) and the second ball body (521) abut against the annular slide way (811), and in the steps S2 and S3, the first ball body (511) on the first stamping column (51) and the second ball body (521) on the second stamping column (52) roll in the annular slide way (811).

3. The thin plate double station stamping method according to claim 1, wherein: in the rotating process of the stamping motor (7), when the first stamping column (51) is located at the lowest position or the second stamping column (52) is located at the lowest position, the stamping motor (7) has start-stop time, and the start-stop time is 1-5 seconds.

4. The thin plate double station stamping method according to claim 2, wherein: the highest part and the lowest part of the annular slide way (811) are respectively provided with equidistant arc sections.