CN213829307U - Prevent mould structure of blanking rebound - Google Patents
Prevent mould structure of blanking rebound Download PDFInfo
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- CN213829307U CN213829307U CN202022454966.6U CN202022454966U CN213829307U CN 213829307 U CN213829307 U CN 213829307U CN 202022454966 U CN202022454966 U CN 202022454966U CN 213829307 U CN213829307 U CN 213829307U
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Abstract
The utility model discloses a die structure for preventing blanking rebound, in particular to the technical field of stamping dies, which aims to solve the defect that blanking foil can be damaged to a certain extent when blanking is carried out in the prior art, and comprises a stripper plate positioned above and a lower template positioned below, wherein the stripper plate is provided with a punch, the lower template is provided with a first die orifice corresponding to the punch, a gas path channel is arranged in the lower template, the first die orifice is provided with a second ejection orifice communicated with one end of the gas path channel, the other end of the gas path channel is communicated with a compressed air supply mechanism, one end of the gas path channel communicated with the second ejection orifice is lower than one end of the gas path channel communicated with the compressed air supply mechanism, so that the punched material is enabled to be under the action of turbulence and negative pressure of downward inclination provided by the compressed air supply mechanism, is carried to fall down to finish normal blanking, does not contact with a blanking part during blanking and does not cause indentation or deformation to products.
Description
Technical Field
The utility model provides a prevent mould structure of blanking rebound, the utility model belongs to the technical field of the foil processing, concretely relates to stamping die technical field.
Background
When the foil is blanked, because the material is too thin, the dead weight of the blanking sheet is too light, the punch rises after blanking, negative pressure can be generated at the moment, the blanking sheet is easy to be lifted out of the plane of the lower template by the punch, and the process is called blanking rebound. The falling material sheet rebounded to the plane of the lower template can influence subsequent stamping, so that the product is poor, and even the die is damaged. The blanking rebound is a common problem which is difficult to solve, and has great influence on continuous stamping.
Application No.: CN201910637700.4, which discloses a foil stamping die, comprising a cover plate, a fixing plate, a support plate, a bottom plate, an upper stamping die unit, a lower stamping die unit, a driving unit and an adsorption unit; the upper end of the support plate is connected with the lower end face of the cover plate, and the lower end of the support plate is connected with the upper end face of the bottom plate; two ends of the fixed plate are respectively connected with two inner side surfaces of the bracket plate; the upper die unit comprises a cylinder and an upper die plate; the air cylinder is fixed on the fixing plate, and the output end of the air cylinder is connected with the upper end face of the upper template; the lower punching die unit is fixed on the upper end surface of the bottom plate; the driving unit comprises a first gear, a second gear, a push plate and a top plate; the adsorption unit is embedded into the upper surface of the lower die unit; the air bag is extruded through the matching of the air cylinder, the upper die plate, the first gear, the second gear, the push plate and the top plate, air inside the air bag is input into the inner cavity of the push rod through the hose, the ejector rod is pushed to move upwards, and therefore the foil after the punching processing is finished is ejected out, and the foil is conveniently taken out from the lower die unit.
The above patent has the defect that the foil after stamping is ejected out by the ejector rod, but certain damage is caused to blanking parts.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a prevent mould structure of blanking rebound to after solving current blanking foil, ejecting with the liftout bar foil after accomplishing the punching press, the liftout bar can cause the defect of certain damage to blanking foil.
In time, the blanking rebound can be generated, the subsequent stamping can be influenced, and the problems of poor products and even die damage can be caused.
The utility model adopts the technical scheme as follows:
the utility model provides a prevent mould structure of blanking rebound, is including the stripper that is located the top and the lower bolster of below, be provided with the drift on the stripper, be provided with on the lower bolster with the corresponding first die orifice of drift, be provided with the gas circuit passageway in the lower bolster, be provided with on the first die orifice with the second spout of gas circuit passageway one end intercommunication, the other end intercommunication of gas circuit passageway has the compressed air mechanism that supplies, with second spout intercommunication the one end of gas circuit passageway be less than with supply compressed air mechanism intercommunication the one end of gas circuit passageway.
The working process is as follows: when in use, the stripper plate and the punch move upwards to place or adsorb the material belt to be punched on the first die opening, then the stripper plate and the punch move downwards, the punch starts to contact the material belt to be punched to form shearing, meanwhile, the compressed air mechanism starts to supply compressed air into the air passage, because the second jet orifice is lower than one end of the air passage communicated with the compressed air mechanism, the compressed air sprayed from the second jet orifice inclines downwards, the punched material sheet is driven to fall under the action of turbulent flow and negative pressure formed by the airflow, normal blanking is completed, the stripper plate rises along with the rising of the punching process, and the punched material sheet is enabled to be punched through the arrangement that one end of the air passage communicated with the compressed air mechanism is lower than one end of the air passage communicated with the compressed air mechanism, under the indiscriminate stream and the negative pressure effect of the downward slope that supply compressed air mechanism to provide, being taken toward the whereabouts, accomplish normal blanking, the blanking mode of this application is reliable and stable, does not contact with blanking spare, does not cause indentation or deformation to the product, has solved current blanking foil after, and it is ejecting with the foil after the punching press is accomplished to ejector pin, and ejector pin can lead to the fact the defect of certain damage to blanking foil.
Further, supply compressed air mechanism including being located briquetting on the stripper is located bottom confined piston cylinder in the lower bolster, with be located in the piston cylinder with piston cylinder matched with piston block is located the piston block with spring between the piston cylinder bottom is located inside the piston block and with the piston block bottom the cavity of piston cylinder intercommunication and being located on the piston block with the air cock that the cavity is linked together, the air cock is in when spring does not take place to deform be located the top of lower bolster and communicate with the external world, be provided with first blowout port on the piston cylinder, the gas circuit passageway with first blowout port intercommunication. Before punching, the spring is not deformed, the air nozzle is communicated with outside air, the interior of a piston cylinder at the lower part of the cavity and the piston block is at normal atmospheric pressure, along with the punching process, the piston is pressed into the piston cylinder, the air nozzle on the piston block is shielded by the cylinder wall in the piston cylinder, a closed space is formed in the cavity of the piston block and the piston cylinder at the lower part of the piston block, the air in the closed space is gradually compressed, the pressure is increased, when a punch head is contacted with a material to be punched to form shearing, a pressing block synchronously formed with the punch head continues to press the piston downwards, at the moment, the air nozzle on the piston block and an air channel on a lower template form a passage, the compressed air at the bottom of the cavity and the piston block is rapidly sprayed downwards in an inclined mode in a first die opening along with the air channel, airflow is formed in the first die opening, and a material piece which is punched is carried to fall under the action of turbulent flow and negative pressure formed by the airflow, and normal blanking is completed, the stripper plate rises along with the continuation of the stamping process, the punch rises along with the stripper plate, and the piston block is restored to the state before stamping under the action of the spring, so that a cycle is completed.
Further, after the pressing block contacts the piston block, the falling height of the punch is equal to the distance between the air nozzle and the first ejection port. When the punch head begins to contact with a material to be punched to form shearing, the air nozzle is just communicated with the air passage, and compressed air is rapidly discharged in the first die opening along with the air passage and forms negative pressure airflow.
Furthermore, an air cylinder is arranged above the punch and can be fixed on the fixing plate, the air cylinder drives the pressing head, the pressing block and the discharging plate to move downwards, the shearing of the punch is realized, and the pressing block presses the piston block downwards to form compressed air.
Further, a lower die holder is arranged at the bottom of the lower die plate, and a second die orifice communicated with the first die orifice is arranged on the lower die holder.
Furthermore, the caliber of the second die opening is larger than that of the first die opening. The second die orifice is located on the lower die base, and the caliber of the second die orifice is larger than that of the first die orifice, so that blanking is facilitated.
In this application, first die orifice and second die orifice intercommunication, and the external intercommunication in second die orifice bottom.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. in the utility model, one end of the gas path channel communicated with the compressed air supply mechanism and the second ejection port is lower than the other end of the gas path channel communicated with the compressed air supply mechanism, so that the punched material is driven to fall under the action of downward inclined turbulent flow and negative pressure provided by the compressed air supply mechanism, and normal blanking is completed;
2. according to the method, an external device or external compressed air is not used, the compressed air is completely provided by the mould, and the problems that the external device is unstable and cannot be synchronized are solved;
3. through the arrangement of the pressing block, the force provided by the punch when the punch is pressed downwards is fully utilized, so that the pressing block presses the piston block downwards to form compressed air, and the compressed air is released in the first die opening at an ingenious time, so that reverse negative pressure is produced in the first die opening, the falling material sheet moves downwards to finish normal blanking, and the problem of blanking rebound is solved ingeniously;
4. on the basis of a general die structure, a group of pressing blocks and piston blocks are added, and an air channel is processed on a lower die plate;
5. when the punch head starts to contact with a material to be punched to form shearing, the air nozzle is just communicated with the air passage, and compressed air is rapidly discharged in the first die opening along with the air passage to form negative pressure airflow;
6. the cylinder can be fixed on the fixed plate, and the cylinder drives pressure head, briquetting and stripper to move down, realizes the shearing of drift, and the briquetting pushes down the piston piece and forms compressed air.
Drawings
Fig. 1 is a schematic structural view of a die structure for preventing falling material rebound of the present invention before stamping;
FIG. 2 is a schematic structural view of the die structure for preventing the falling material from rebounding during stamping of the present invention;
fig. 3 is an enlarged view of a in fig. 2.
The labels in the figure are: 1-a lower die holder, 2-a lower die plate, 3-a first die orifice, 4-a material belt to be punched, 5-a stripper, 6-a punch, 7-an air passage, 8-a pressing block, 9-an air nozzle, 10-a piston block, 11-a spring, 12-a piston cylinder, 13-a cavity, 14-a second die orifice, 15-a first ejection port, 16-a punched material sheet and 17-a second ejection port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1-3, a die structure for preventing blanking from rebounding includes a stripper 5 located above and a lower die plate 2 located below, where a punch 6 is disposed on the stripper 5, a first die opening 3 corresponding to the punch 6 is disposed on the lower die plate 2, an air passage 7 is disposed in the lower die plate 2, a second ejection port 17 communicated with one end of the air passage 7 is disposed on the first die opening 3, the other end of the air passage 7 is communicated with a compressed air supply mechanism, and one end of the air passage 7 communicated with the second ejection port 17 is lower than one end of the air passage 7 communicated with the compressed air supply mechanism.
The working process is as follows: when in use, the stripper plate 5 and the punch 6 move upwards to place or adsorb the material belt 4 to be punched on the first die orifice 3, then the stripper plate 5 and the punch 6 move downwards, the punch 6 starts to contact the material belt 4 to be punched to form shearing, meanwhile, the compressed air supplying mechanism starts to supply compressed air into the air passage 7, because the second ejection port 17 is lower than one end of the air passage 7 communicated with the compressed air supplying mechanism, the compressed air ejected from the second ejection port 17 inclines downwards, the material sheet 16 which has completed punching is driven to fall under the action of turbulent flow and negative pressure formed by the air flow to complete normal blanking, along with the continuation of the punching process, the stripper plate 5 rises, the punch 6 also rises, one end of the air passage 7 communicated with the air passage 7, the compressed air supplying mechanism and the second ejection port 17 is lower than one end of the air passage 7 communicated with the compressed air supplying mechanism, the messenger has accomplished the material of punching press, and supply compressed air mechanism to provide down the indiscriminate stream of slope and the negative pressure effect down, be taken toward whereabouts, accomplish normal blanking, the blanking mode of this application is reliable and stable, does not contact with blanking spare, does not cause indentation or deformation to the product, has solved current blanking foil after, and it is ejecting with the foil after the punching press is accomplished to the liftout pole, and the liftout pole can lead to the fact the defect of certain damage to blanking foil.
Example 2
As shown in fig. 1-3, on the basis of embodiment 1, the compressed air supply mechanism includes a pressing block 8 located on the discharging board 5, a piston cylinder 12 located in the lower board 2 and having a closed bottom, a piston block 10 located in the piston cylinder 12 and matching with the piston cylinder 12, a spring 11 located between the piston block 10 and the bottom of the piston cylinder 12, a cavity 13 located inside the piston block 10 and communicating with the piston cylinder 12 at the bottom of the piston block 10, and an air faucet 9 located on the piston block 10 and communicating with the cavity 13, where the air faucet 9 is located above the lower board 2 and communicating with the outside when the spring 11 is not deformed, the piston cylinder 12 is provided with a first ejection port 15, and the air passage 7 is communicated with the first ejection port 15. Before punching, the spring 11 is not deformed, the air tap 9 is communicated with outside air, the cavity 13 and the piston cylinder 12 at the lower part of the piston block 10 are at normal atmospheric pressure, along with the punching process, the piston is pressed into the piston cylinder 12, the air tap 9 on the piston block 10 is shielded by the cylinder wall in the piston cylinder 12, a closed space is formed in the cavity 13 of the piston block 10 and the piston cylinder 12 at the lower part of the piston block 10, the air in the closed space is gradually compressed, the pressure is increased, when the punch 6 starts to contact with a material to be punched to form shearing, the press block 8 synchronously formed with the punch 6 continues to press the piston downwards, at the moment, the air tap 9 on the piston block 10 and the air channel 7 on the lower template 2 form a passage, the compressed air at the bottom of the cavity 13 and the piston block 10 is rapidly sprayed downwards in the first die opening 3 in an inclined manner along with the air channel 7, an air flow is formed in the first die opening 3, and the material sheet 16 which has been punched is under the action of turbulent flow and negative pressure formed by the air flow, the blank is carried to fall down to finish normal blanking, the stripper plate 5 rises along with the continuation of the punching process, the punch 6 also rises, and the piston block 10 is restored to the state before punching under the action of the spring 11, thereby completing a cycle.
Example 3
As shown in fig. 1 to 3, in example 1, after the briquette 8 contacts the piston block 10, the height of the punch 6 that falls is equal to the distance from the gas nozzle 9 to the first discharge port 15. When the punch 6 starts to contact with a material to be punched to form shearing, the air nozzle 9 is just communicated with the air passage 7, and compressed air is rapidly discharged in the first die opening 3 along with the air passage 7 to form negative pressure airflow.
Example 4
As shown in fig. 1, on the basis of embodiment 1, an air cylinder is arranged above the punch 6, and the air cylinder can be fixed on the fixing plate, and drives the pressing head, the pressing block 8 and the discharging plate 5 to move down, so as to realize shearing of the punch 6, and the pressing block 8 presses the piston block 10 to form compressed air.
Example 5
As shown in fig. 1-2, on the basis of embodiment 1, a lower die holder 1 is disposed at the bottom of the lower die plate 2, and a second die opening 14 communicated with the first die opening 3 is disposed on the lower die holder 1.
Example 6
As shown in fig. 1-2, in example 1, the aperture of the second die 14 is larger than the aperture of the first die 3. The second die orifice 14 is positioned on the lower die base 1, and the caliber of the second die orifice 14 is larger than that of the first die orifice 3, so that blanking is facilitated.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. The utility model provides a prevent mould structure of blanking rebound, is including stripper (5) and lower bolster (2) of below that are located the top, be provided with drift (6) on stripper (5), be provided with on lower bolster (2) with corresponding first die orifice (3) of drift (6), its characterized in that: the die is characterized in that an air path channel (7) is arranged in the lower die plate (2), a second ejection port (17) communicated with one end of the air path channel (7) is arranged on the first die opening (3), the other end of the air path channel (7) is communicated with a compressed air supply mechanism, and one end of the air path channel (7) communicated with the second ejection port (17) is lower than one end of the air path channel (7) communicated with the compressed air supply mechanism.
2. The die structure for preventing blanking rebound of claim 1, wherein: the compressed air supply mechanism comprises a pressing block (8) positioned on the stripper plate (5) and a piston cylinder (12) which is positioned in the lower template (2) and has a closed bottom, a piston block (10) which is positioned in the piston cylinder (12) and is matched with the piston cylinder (12), a spring (11) which is positioned between the piston block (10) and the bottom of the piston cylinder (12), a cavity (13) which is positioned in the piston block (10) and is communicated with the piston cylinder (12) at the bottom of the piston block (10) and an air tap (9) which is positioned on the piston block (10) and is communicated with the cavity (13), the air tap (9) is positioned above the lower template (2) when the spring (11) is not deformed and is communicated with the outside, the piston cylinder (12) is provided with a first outlet (15), and the air passage (7) is communicated with the first outlet (15).
3. The die structure for preventing blanking rebound as claimed in claim 2, wherein: after the pressing block (8) contacts the piston block (10), the falling height of the punch (6) is equal to the distance between the air nozzle (9) and the first spray port (15).
4. The die structure for preventing blanking rebound of claim 1, wherein: and an air cylinder is arranged above the punch head (6).
5. The die structure for preventing blanking rebound of claim 1, wherein: the bottom of the lower template (2) is provided with a lower die holder (1), and a second die orifice (14) communicated with the first die orifice (3) is arranged on the lower die holder (1).
6. The die structure for preventing the falling material from rebounding as claimed in claim 5, wherein: the caliber of the second die orifice (14) is larger than that of the first die orifice (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022454966.6U CN213829307U (en) | 2020-10-29 | 2020-10-29 | Prevent mould structure of blanking rebound |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022454966.6U CN213829307U (en) | 2020-10-29 | 2020-10-29 | Prevent mould structure of blanking rebound |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213829307U true CN213829307U (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022454966.6U Active CN213829307U (en) | 2020-10-29 | 2020-10-29 | Prevent mould structure of blanking rebound |
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|---|---|
| CN (1) | CN213829307U (en) |
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- 2020-10-29 CN CN202022454966.6U patent/CN213829307U/en active Active
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