CN218591595U

CN218591595U - Progressive die of outdoor portable card knife

Info

Publication number: CN218591595U
Application number: CN202221787645.0U
Authority: CN
Inventors: 李卫珍; 李权球
Original assignee: Guangzhou City University of Technology
Current assignee: Guangzhou City University of Technology
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-03-10
Anticipated expiration: 2032-07-12

Abstract

The utility model provides a mould upgrades of outdoor portable card sword, the mould upgrades includes and touches and the lower mould, the feed inlet department of lower mould is equipped with pay-off guider, the mould upgrades has eight process stations, including the first process station that is used for the blanking to lead positive hole and side edge, a second process station for blanking distance dog, a third process station for blanking first hole and fifth hole, a fourth process station for blanking second hole, third hole and fourth hole, a fifth process station for blanking first breach groove and second breach groove, a sixth process station for blanking body appearance, a seventh process station for blanking body appearance and an eighth process station for the strip is broken. The utility model discloses it satisfies the production requirement of the mould that upgrades of an outdoor portable card sword to upgrade the mould.

Description

Progressive die of outdoor portable card knife

Technical Field

The utility model belongs to the technical field of the mould and specifically relates to a mould upgrades of outdoor portable card sword.

Background

It is well known that the mold occupies a very important position in industrial production, so it is also called "parent of industry". According to incomplete statistics, most of plastic parts or hardware rough machining products are formed through dies in industrial production, and more than half of hardware finished products are also formed through dies. The hardware stamping die relates to various industries, and is widely applied to the household appliance industry, the automobile industry, the aerospace industry, the communication industry and the like. In recent years, the development of the mold industry in China is very fast, and the brought benefits are very huge. However, the gap is not small compared with the international developed die industry countries. For example, the precision, complexity and service life of the manufactured die are about 30% in China and more than 50% in foreign countries.

The outdoor portable card knife has multiple functions, occupies small space, can be carried about like a bus card in shape and size, and is very convenient. And outdoor portable card sword can be used for defending oneself in the open air, can possess the direction recognition function, can regard as the instrument: such as a spanner, a bottle opener, a nail raising device and the like, and is convenient, light and practical. Is suitable for mass production and popularization.

The outdoor portable card blade is simple in shape, and the part can be formed through multiple times of ordinary blanking. For a general blanking part, the economic tolerance grade of the inner and outer dimensions of the part is not higher than IT11 grade, the tolerance of the outer and inner dimensions of the part, the tolerance of the dimension from the hole center of the part to the edge of the part, and the tolerance of the distance between the hole center and the hole center of the part can be checked by related die design information, and the blanking part is produced in large batch and is suitable for a stamping method. The part is made of stainless steel 304, and the material is suitable in strength and rigidity, has good adaptability to forming and separating, and has the characteristics of corrosion resistance and rust resistance.

This kind of product belongs to sheet metal class panel beating shaping product, and the material is stainless steel 304, and thickness t =2.0mm, and material strength, hardness are high, and the part size is smaller, conveniently carries, and open-air convenient to use carries out mass production as the instrument with the help of the mould generally. At present, a common production scheme for a sheet metal stamping part with a smaller size comprises the production of a single-process die, a compound die and a progressive die.

If the single-process die is used for production, the die is simple in composition and easy to manufacture, but only one process can be punched at each time, and the precision of a stamped part can be guaranteed through the die.

If the compound die is adopted for production, the compound die can punch holes, and a plurality of procedures such as blanking and the like can be formed by one-time punching, so that the stations are reduced, the transfer time is shortened, the production efficiency is high, and the operation is simple, rapid and safe.

The progressive die comprises a plurality of stations, each station can form a plurality of working procedures, and the progressive die is suitable for forming parts, is simple in shape, small in forming size, low in plane quality requirement and capable of producing large-batch parts. The progressive die has high production efficiency, is suitable for large and medium-scale production, and is safe and convenient to operate.

Aiming at the requirements, the progressive die meets the production design requirements, so that the progressive die suitable for the outdoor portable card knife needs to be designed.

Disclosure of Invention

The utility model aims to solve the technical problem that a mould upgrades of outdoor portable card sword is provided, satisfies the production requirement of the mould that upgrades of an outdoor portable card sword.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides an outdoor portable card sword upgrades mould, outdoor portable card sword includes the rectangle body, and the upper left corner of body is equipped with first breach groove and second breach groove, and the upper portion of body is equipped with first hole, and the middle part of body is equipped with second hole and the third hole of arranging about, and the lower part of body is equipped with the fourth hole and the fifth hole of arranging about, and the higher authority and the lower level of body are the side blade, and the lower left corner of body is equipped with leads the positive hole, it includes and touches and the lower mould to upgrade the mould, the feed inlet department of lower mould is equipped with the pay-off guider, and it has eight process stations to upgrade the mould, including the first process station that is used for blanking lead positive hole and side blade, a second process station for blanking distance dog, a third process station for blanking first hole and fifth process station hole, a fourth process station for blanking second hole, third hole and fourth hole, a fifth process for blanking first breach groove and second breach groove, a sixth process for blanking body appearance, a seventh process for blanking body appearance and an eight processes that are used for blanking station material area are broken. The utility model discloses the principle: because the requirements for the inner shape and the outer shape of the outdoor portable bayonet knife and the quality precision are higher, the side edge is selected for matching and positioning with the guide pin, the step pitch can be ensured by the side edge, and the accuracy of the distance can be improved by the guide pin. In the progressive die, the feeding step is generally ensured by using the side blades, the side blades are actually used for punching the strip edge material, the length of the punched edge material is just one step, the width of the strip material punched by the side blades forms a step, when the strip material is fed into one step, the strip material is just clamped, and only through the next time of side blade punching, a new step is formed, and the strip material can continue to advance. The side edges designed by the die are just two ends of the appearance of the part, so that the step pitch can be controlled, the appearance of the part can be blanked, and two purposes are achieved. In a progressive die, a pilot hole is punched on a first station of a strip material generally, so that a pilot pin can be loaded on a station behind the pilot hole conveniently, and no matter the side edge distance or the stop pin distance is determined, the step pitch cannot be determined accurately, so that the pilot pin needs to be added to improve the precision, and errors caused by the problems of cutting edge abrasion, burr generation and the like are eliminated.

As an improvement, the upper die and the lower die are guided by a ball guide device.

As an improvement, the die carrier of the progressive die is a diagonal guide post die carrier.

As an improvement, the upper die comprises an upper die base, an upper base plate arranged on the upper die base, a fixed plate arranged on the upper base plate, a stripper plate arranged at a gap with the fixed plate, a stripper plate arranged on the stripper plate, an upper limiting column and a male die; the lower die comprises a lower die base, a lower backing plate installed on the lower die base, a lower die plate installed on the lower backing plate, a lower limiting column and a female die.

Compared with the prior art, the utility model the beneficial effect who brings is:

because the requirements for the inner shape and the outer shape of the outdoor portable bayonet knife and the quality precision are higher, the side edge is selected for matching and positioning with the guide pin, the step pitch can be ensured by the side edge, and the accuracy of the distance can be improved by the guide pin. In the progressive die, the feeding step pitch is generally ensured by using side blades, the side blades are actually used for punching strip edge materials, the length of the punched edge materials is just one step pitch, the width of the strip materials punched by the side blades forms a step, when the strip materials are fed into one step pitch, the strip materials are just clamped, and the strip materials can continue to advance only by forming a new step pitch through next side blade punching. The side edges designed by the die are just two ends of the appearance of the part, so that the step pitch can be controlled, the appearance of the part can be blanked, and two purposes are achieved. In a progressive die, a pilot hole is punched on a first station of a strip material generally, so that a pilot pin can be loaded on a station behind the pilot hole conveniently, and no matter the side edge distance or the stop pin distance is determined, the step pitch cannot be determined accurately, so that the pilot pin needs to be added to improve the precision, and errors caused by the problems of cutting edge abrasion, burr generation and the like are eliminated.

Drawings

FIG. 1 is a sectional view of a progressive die.

Fig. 2 is a schematic view of an outdoor portable card knife.

Fig. 3 is a process flow diagram of an outdoor portable card knife.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model provides an outdoor portable card sword upgrades mould, as shown in figure 2, outdoor portable card sword includes the rectangle body, and the upper left corner of body is equipped with first breach groove 26 and second breach groove 27, and the upper portion of body is equipped with first hole 28, and the middle part of body is equipped with about second hole 29 and the third hole 30 of arranging, and the lower part of body is equipped with about fourth hole 31 and the fifth hole 32 of arranging, and the higher authority and the lower authority of body are the side sword, and the lower left corner of body is equipped with leads positive hole 33.

As shown in fig. 1, the progressive die comprises an upper die and a lower die, the upper die and the lower die are guided by a ball guide device 7, a die frame of the progressive die is a diagonal guide post die frame, and an inner guide post 1 is arranged between the upper die and the lower die. The upper die comprises an upper die base 17, an upper backing plate 18 mounted on the upper die base 17, a fixed plate 15 mounted on the upper backing plate 18, a stripper plate backing plate 14 arranged in a gap with the fixed plate 15, a stripper plate 13 mounted on the stripper plate backing plate 14, an upper limiting column 18 and a male die 22; a spring 19 is arranged between the stripper plate backing plate 14 and the fixed plate 15; the stripper plate 13 is fixed by means of stripper plate fixing pins 20 and stripper plate fixing screws 23; the fixing plate 15 is fixed by an upper die fixing pin 21 and an upper die fixing screw 24; the stripper plate 13 is secured by means of a stripper screw 25. The lower die comprises a lower die base 10, a lower cushion plate 11 arranged on the lower die base 10, a lower die plate 12 arranged on the lower cushion plate 11, a lower limiting column 6 and a female die 4; the bottom of the lower die base 10 is provided with a die leg 9; the lower template 12 is fixed by a lower die fixing pin 5 and a lower die fixing screw 3; the lower die is provided with a buoyancy lifting material guide pin 2, the buoyancy lifting material guide pin 2 is added in the material belt feeding process, the material belt pressed down in the blanking process is floated and lifted, and the material belt is fed in a continuous guiding mode. And a feeding guide device 8 is arranged at the feeding port of the lower die.

Determining a mold positioning mode: because the requirements of the inner shape and the outer shape of the outdoor portable bayonet knife and the quality precision are high, the side edge and the guide pin are selected for matching and positioning, the step pitch can be ensured by the side edge, and the accuracy of the distance can be improved by the guide pin. In the progressive die, the feeding step is generally ensured by using the side blades, the side blades are actually used for punching the strip edge material, the length of the punched edge material is just one step, the width of the strip material punched by the side blades forms a step, when the strip material is fed into one step, the strip material is just clamped, and only through the next time of side blade punching, a new step is formed, and the strip material can continue to advance. The side edges designed by the die are just two ends of the appearance of the part, so that the step pitch can be controlled, the appearance of the part can be blanked, and two purposes are achieved at one stroke. In a progressive die, a pilot hole is punched on a first station of a strip material generally, so that a pilot pin can be loaded on a station behind the pilot hole conveniently, and no matter the side edge distance or the stop pin distance is determined, the step pitch cannot be determined accurately, so that the pilot pin needs to be added to improve the precision, and errors caused by the problems of cutting edge abrasion, burr generation and the like are eliminated.

Determining the unloading and discharging mode of the die: the discharging mode is distinguished according to the discharging device and can be divided into two types, wherein the first type is rigid discharging, and the other type is elastic discharging. Rigid discharging is generally used for punching dies with thicker materials, because the discharging force of the rigid discharging is larger, the discharging is more reliable, but the rigid discharging can not play a role of pressing materials, and the quality of punched products is not high. The elastic unloading force is smaller, the elastic unloading force is limited by the unloading part, the safety and the reliability of the elastic unloading force are lower than those of rigid unloading, but the elastic unloading force can play a role in pressing, so that the quality of a punched product is higher, and the elastic unloading force is adopted because the flatness and the shape and the size of the part are higher. And in the discharging mode, a cylindrical cutting edge conical female die is adopted, and the blanking waste directly falls out of the die by utilizing the conicity of the female die. The strip stock layout designed here, the last step is to cut off the strip stock, the strip stock is cut off and the part is just punched and formed, and the part slides out of the die along the slope by using the weight of the part.

Determining the guiding mode of the die: the sliding guide column guide type is common in daily production, because the structure is relatively simple, the processing and the assembly are easy, the precision is high, the stability is good, and the standardization degree is high. In a high-speed blanking die and a hard alloy die which work in a high-speed press, a rolling guide pillar and guide sleeve mode is generally adopted, because the guide is accurate, and no gap exists between a guide pillar and the guide sleeve. Since the die for the part is a high speed blanking die, a rolling guide is preferred. The device is generally made of GCr15 material, and the hardness reaches 60-62 HRC after heat treatment.

Male die for forming parts: the part can be formed by multi-step blanking, the shape of an inner hole is complex, and the part is provided with a circular hole and a special-shaped hole. Because the size and the shape of the part to be blanked are determined by the male die to a great extent, the male die is divided into a circular male die and a non-circular male die according to the shape of the formed inner hole of the part. For pilot holes, circular male dies are adopted, and for special-shaped holes, straight-through male dies with the same fixed parts as blanking forming parts are adopted. Because the aperture ratio of this mould blanking is less, and the distance between hole and the hole is also than relatively nearer, and the clearance is also less, so in blanking process, blanking waste material can take place to jump back and cause and fold the material to make drift and die blade bump, if the blade collapses and decreases, need pincer grind to repair, then can cause the terrace die, reduction by a wide margin of die life, if the two chooses one, only select to protect the die blade not damaged. Because it is much more convenient to change the punch only than to change the integral die. So that the female die is required to be harder than the male die for one grade. Because the male die of the die is required to have long service life and good wear resistance, high-alloy tool steel is selected as the material of the male die. The hardness of the quenched male die cutting edge is generally 58-62 HRC, and the medium temperature tempering is carried out to 40-50 HRC.

And (3) forming a female die of the part: according to the requirements of the inner and outer shapes and the dimensional accuracy of the part, a cylindrical cutting edge conical female die is selected. The strength of the cutting edge of the female die is strong, the cutting edge is not easy to be abraded, but the cylindrical cutting edge can easily accumulate waste materials. Therefore, the punching die is suitable for parts with more complex inner and outer shapes and higher quality requirements. Since the die requires high hardness, the higher the hardness, the better the wear resistance and the longer the service life. However, if the hardness is too high, the die is easy to crack, so that the surface hardness of the die is required to be high, the core hardness is required to be slightly lower, and the hardness is required to be higher than that of the convex die by one grade, so that high-speed steel is selected as the material of the die. The hardness of the quenched female die cutting edge is 63-67HRC, and the high-temperature tempering is carried out to 28-30HRC.

Because the quality precision requirement of this outdoor portable card sword of part is higher, so select here to unload by elasticity, the elasticity is unloaded and can be played and unload and press the material effect.

The workpiece is formed by eight times of punching, and the progressive die is designed to require that the strip is automatically fed, so that the feeding distance of the strip is required to be ensured, and the side edges can well ensure the step distance. The width of the blanking side edge is just a step pitch, and the part appearance can be just punched out when the side edge is blanked, so the forming side edge is selected to ensure the step pitch. The side edge and the guide pin are fixed in a fixed distance mode, the positioning accuracy is improved, and the guide pin is selected to improve the accuracy of fixed distance. As shown in fig. 3, the process arrangement is substantially as follows:

the first process step: punching a guide hole, and then punching a side edge for positioning and spacing the automatic feeding of the strip;

and a second step: the distance-keeping stop block is used for keeping the distance between the side edge and the distance-keeping stop block, the distance between the distance-keeping stop block and the side edge is 0.2mm, the feeding of the strip material is not influenced by the distance, the blanking distance of the side edge is effectively ensured, and the blanking error of the side edge is compensated;

and a third step of: the two large bores of the blanking part, namely the first bore 28 and the fifth bore 32,

step four: three small inner holes, namely a second inner hole 29, a third inner hole 30 and a fourth inner hole 31, are punched in the part;

and a fifth step: blanking two part profile notches, namely a first notch groove 26 and a second notch groove 27;

step six and step seven: the shapes of parts are punched, the strip is just formed, the interfaces of the strip and the shapes of the six working procedures and the seven working procedures are overlapped by 0.5mm, so that the design can effectively prevent burrs from being generated, and the interfaces of the two ends of the strip and the eight working procedures are provided with a small segment of circular arc with the radius of about 0.2mm, so that the design cannot influence the size precision of a workpiece, and the burrs can be effectively prevented from being generated;

and eighth step: when the strip material is cut off, the shape of the part is punched out at last, and the part can freely slide along with the inclination by utilizing the self weight because most of the part is exposed out of the die.

Claims

1. The utility model provides an outdoor portable card sword upgrades mould, outdoor portable card sword includes the rectangle body, and the upper left corner of body is equipped with first breach groove and second breach groove, and the upper portion of body is equipped with first hole, and the middle part of body is equipped with second hole and the third hole of arranging about, and the lower part of body is equipped with the fourth hole and the fifth hole of arranging about, and the higher authority and the lower level of body are the side sword, and the lower left corner of body is equipped with leads positive hole, it includes mould and lower mould, its characterized in that to upgrade the mould: the feed inlet department of lower mould is equipped with the pay-off guider, the progressive die has eight process stations, including the first process station that is used for blanking guide hole and side edge, a second process station for blanking distance dog, a third process station for blanking first hole and fifth hole, a fourth process station for blanking second hole, third hole and fourth hole, a fifth process station for blanking first breach groove and second breach groove, a sixth process station for blanking body appearance, a seventh process station for blanking body appearance and an eighth process station for the strip is broken.

2. The progressive die of an outdoor portable card blade of claim 1, wherein: the upper die and the lower die are guided by a ball guide device.

3. The progressive die of an outdoor portable card blade of claim 1, wherein: the die frame of the progressive die is a diagonal guide post die frame.

4. The progressive die of an outdoor portable card blade of claim 1, wherein: the upper die comprises an upper die base, an upper padding plate arranged on the upper die base, a fixing plate arranged on the upper padding plate, a stripper plate arranged in a gap with the fixing plate, a stripper plate arranged on the stripper plate, an upper limiting column and a male die; the lower die comprises a lower die base, a lower backing plate installed on the lower die base, a lower die plate installed on the lower backing plate, a lower limiting column and a female die.