CN211218255U - Cold stamping die for sheet parts - Google Patents
Cold stamping die for sheet parts Download PDFInfo
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- CN211218255U CN211218255U CN201922381115.0U CN201922381115U CN211218255U CN 211218255 U CN211218255 U CN 211218255U CN 201922381115 U CN201922381115 U CN 201922381115U CN 211218255 U CN211218255 U CN 211218255U
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- 239000000463 material Substances 0.000 claims abstract 5
- 229920002635 polyurethane Polymers 0.000 claims abstract 4
- 239000004814 polyurethane Substances 0.000 claims abstract 4
- 229920001971 elastomer Polymers 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract 2
- 238000012797 qualification Methods 0.000 abstract 1
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Abstract
The utility model discloses a cold stamping die for thin slice parts, which comprises a lower die holder and an upper die holder, wherein the middle part of the lower die holder is provided with a fixed plate, and a backing plate is arranged on the upper die holder corresponding to the fixed plate; a lower die is fixed on the fixing plate, and an upper die is fixed on the backing plate; two ends of the lower die holder are respectively provided with a guide post, and the positions of the upper die holder corresponding to the two guide posts are respectively provided with a guide sleeve; the upper die comprises an upper die sleeve and a first concave-convex die; the first concave-convex die is embedded in the die cavity and is fixedly connected with the upper die sleeve through a locking screw, and the first concave-convex die is made of polyurethane material; the lower die comprises a second concave-convex die, an elastic frame and a pressure plate; the lower end of the second concave-convex die is fixedly connected with the fixing plate; the elastic frame is sleeved on the second concave-convex die; the lower side of the pressure plate is detachably connected with the elastic frame through a positioning structure. The utility model discloses can satisfy the punching press requirement of thin slice part, the thin slice part surfacing of punching press play, no burr, the qualification rate is high.
Description
Technical Field
The utility model relates to a technical field is made to the mould, concretely relates to cold stamping die of thin slice part.
Background
The working parts (male die or female die) of the traditional cold stamping die are made of steel. When punching, blanking, bending and forming are carried out, the working clearance between the male die and the female die is the key of forming, in particular to the production of sheet parts. The thin sheet part is made of steel, aluminum, copper and the like with the thickness of less than 0.15mm or plastic, printed boards and the like with the thickness of less than 2 mm. Due to the fact that the sheet material is small in thickness, the requirement on the matching precision of the male die and the female die is very high when the sheet material is used for punching and blanking.
For example, the suspension part is applied to the fields of high-precision electronic and electrical equipment, aerospace, automobile manufacturing and the like, is made of beryllium bronze Qbe2 (GB/T5231-2001), and has the thickness of only 0.03 mm. The suspension piece part is required to have a smooth surface, no burr, straight and uniform ribs, no wrinkle, no crack and other defects. Because the manufacturing and assembling precision of the suspension part to the traditional female die and male die is too high, the requirements of the existing equipment and the existing processing technology are difficult to meet, the punched suspension part has the problems of burrs, wrinkles and the like, and the yield is low.
Therefore, it is necessary to design a cold stamping die for thin sheet parts to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art exists, the utility model aims to solve the current assembly precision that is used for terrace die and the die of the steel mould of cold stamping thin slice part low, problem that the part qualification rate that the punching press goes out is low provides a thin slice part cold stamping die, can satisfy the punching press requirement of thin slice part, and the thin slice part surfacing, the no burr of punching press play, the qualification rate is high.
In order to solve the technical problem, the utility model discloses a technical scheme is like this:
a cold stamping die for thin sheet parts comprises a lower die holder and an upper die holder, wherein a fixed plate is arranged in the middle of the lower die holder, and a base plate is arranged on the upper die holder corresponding to the fixed plate; a lower die is fixed on the fixing plate, an upper die is fixed on the backing plate, and the lower die and the upper die are opposite; two ends of the lower die holder are respectively provided with a guide post, the positions of the upper die holder corresponding to the two guide posts are respectively provided with a guide sleeve, the guide sleeves are sleeved on the guide posts and are connected with the guide posts in a sliding fit manner, and the upper die can move downwards until the lower die is contacted; the upper die comprises an upper die sleeve and a first concave-convex die; the upper side of the upper die sleeve is fixed with the base plate, the lower side of the upper die sleeve is provided with a die cavity, the first concave-convex die is embedded in the die cavity and is fixedly connected with the upper die sleeve through a locking screw, and the first concave-convex die is made of polyurethane material;
the lower die comprises a second concave-convex die, an elastic frame and a pressure plate; the second concave-convex die is made of metal materials, and the lower end of the second concave-convex die is fixedly connected with the fixing plate; the elastic frame is sleeved on the second concave-convex die, the lower side of the elastic frame is fixedly connected with the fixing plate, and the upper side of the elastic frame is flush with the upper side of the second concave-convex die; the pressure plate is provided with a through hole corresponding to the second male-female die, the lower side of the pressure plate is detachably connected with the elastic frame through the positioning structure, and the pressure plate can be sleeved in the second male-female die through the through hole in the up-and-down moving process and forms sliding fit with the second male-female die.
The first concave-convex die of the cold stamping die is made of polyurethane materials, the first concave-convex die is embedded in the upper die sleeve to limit the first concave-convex die, and the second concave-convex die of the cold stamping die is made of metal materials, so that the formed cold stamping die is gapless stamping of a half hard die and a half soft die. During stamping, the polyurethane in a closed state is compressed to generate larger unit pressure, and the specified procedures are completed by using the counter force of elastic deformation, such as: punching, blanking, cutting, bending and forming metal and nonmetal, so that the punched sheet part has flat surface, no burr and no fold and high qualification rate. Compared with the traditional steel die, the die does not need the working clearance between the male die and the female die, integrates the male die and the female die, reduces the manufacturing and assembling precision of the die, and shortens the manufacturing period and the manufacturing cost of the die. And the efficiency can be improved in the process of stamping the sheet parts, the production cost of the sheet parts is reduced, and the method is suitable for stamping batch production of the sheet parts.
Further, polyurethane of the first concave-convex die is made of polyurethane materials with Shore hardness A85-95 degrees, so that the first concave-convex die can generate large unit pressure during stamping, and stamping is achieved.
Further, the second concave-convex die is provided with a cavity for forming a through hole on a part, and elastic rubber is filled in the cavity. Therefore, after the punched waste material enters the cavity of the second concave-convex die during the forming of the through hole, the elastic rubber filled in the cavity can push the waste material out of the cavity by means of the elasticity of the elastic rubber, and the die is convenient to clean.
Further, the outside of first concavo-convex mould is located the outside of second concavo-convex mould, can contact with the upside of pressing the flitch after first concavo-convex mould descends like this, improves cold stamping die's reliability.
Further, the positioning structure comprises a positioning block and a positioning groove; the lower side of the pressure plate is provided with a plurality of positioning blocks around the circumference of the pressure plate, the upper side of the elastic frame is provided with positioning grooves corresponding to the positioning blocks, and the positioning blocks are positioned in the positioning grooves, so that when the pressure plate moves downwards under the action of the first concave-convex die during stamping, the pressure plate is guided by the positioning blocks and the positioning grooves, no deviation occurs during stamping, and the stamping precision is improved.
Furthermore, the upper end of the guide sleeve penetrates through the upper side of the upper die base, and the guide column is sleeved at the lower end of the guide sleeve, so that the guide sleeve is more reasonable in arrangement, and the movement direction is more accurate.
Compared with the prior art, the utility model has the advantages of as follows:
1. the first concave-convex die of the cold stamping die is made of polyurethane materials, the first concave-convex die is embedded in the upper die sleeve to limit the first concave-convex die, and the second concave-convex die of the cold stamping die is made of metal materials, so that the formed cold stamping die is gapless stamping of a half hard die and a half soft die. During stamping, the polyurethane in a closed state is compressed to generate larger unit pressure, and the specified procedures are completed by using the counter force of elastic deformation, such as: punching, blanking, cutting, bending and forming metal and nonmetal, so that the punched sheet part has flat surface, no burr and no fold and high qualification rate.
2. Compared with the traditional steel die, the die does not need the working clearance between the male die and the female die, integrates the male die and the female die, reduces the manufacturing and assembling precision of the die, and shortens the manufacturing period and the manufacturing cost of the die.
3. The efficiency can be improved in the process of stamping the thin sheet parts, the production cost of the thin sheet parts is reduced, and the method is suitable for stamping batch production of the thin sheet parts.
Drawings
Fig. 1 is a schematic view of the cold stamping die for sheet parts of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a view from a-a in fig. 2.
Fig. 4 is a top view of the upper mold of fig. 1.
Fig. 5 is a bottom view of the lower mold of fig. 1.
Fig. 6 is a schematic view of a suspension material stamped by a cold stamping die for sheet parts according to the present invention.
In the figure: the die comprises a lower die holder 1, a fixing plate 11, a lower die 12, a second concave-convex die 121, an elastic frame 122, a pressure plate 123, a guide column 13, an upper die holder 2, a backing plate 21, an upper die 22, an upper die sleeve 221, a first concave-convex die 222, a guide sleeve 23, a punch handle 24 and a suspension part 3.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Referring to fig. 1-3, a cold stamping die for sheet parts comprises a lower die holder 1 and an upper die holder 2. In specific implementation, the lower die holder 1 and the upper die holder 2 both adopt 45# steel, and the upper surface and the lower surface are subjected to flat grinding after artificial aging, so that the parallelism and the smoothness of the lower die holder 1 and the upper die holder 2 are ensured. The middle part of the lower die holder 1 is provided with a fixed plate 11, and the upper die holder 2 is provided with a backing plate 21 corresponding to the fixed plate 11. A lower die 12 is fixed to the fixed plate 11, an upper die 22 is fixed to the tie plate 21, and the lower die 12 and the upper die 22 face each other. When the upper die 22 is moved down into engagement with the lower die 12, a forming die for the sheet part is formed. Two ends of the lower die holder 1 are respectively provided with a guide column 13, and the upper die holder 2 is respectively provided with a guide sleeve 23 corresponding to the two guide columns 13. In specific implementation, the guide post and the guide sleeve are made of T10A steel, the strength and the wear resistance of the guide post 13 and the guide sleeve 23 are guaranteed by heat treatment quenching (HRC 53-57) of the T10A steel, the inner circle and the outer circle are ground, and the dimensional accuracy, the coaxiality and the smoothness of the guide post 13 and the guide sleeve 23 are guaranteed. The upper end of the guide sleeve 23 penetrates through the upper side of the upper die base 2, and the guide column 13 is sleeved at the lower end of the guide sleeve 23, so that the guide sleeve 23 is more reasonable in arrangement and more accurate in movement direction. The guide sleeve 23 is sleeved on the guide column 13 and is connected with the guide column 13 in a sliding fit mode, the guide sleeve 23 can move up and down along the guide column 13, and the upper die 22 can move down to be contacted with the lower die 12.
Referring to fig. 4, the upper mold 22 includes an upper chase 221 and a first male and female mold 222. The upper side of the upper die sleeve 221 is fixed with the backing plate 21, the lower side of the upper die sleeve is provided with a die cavity, and the first concave-convex die 222 is embedded in the die cavity and is fixedly connected with the upper die sleeve 221 through a locking screw. The first concave-convex die 222 is made of polyurethane material, and is required to be formed by grinding and smooth. The polyurethane material is preferably polyurethane material with Shore hardness A85-95 degrees, so that the first concave-convex die 222 can generate larger unit pressure during stamping to realize stamping. In practice, the punch handle 24 is further disposed on a side of the upper die holder 2 away from the first concave-convex die 222, so as to facilitate punching.
Referring to fig. 5, the lower mold 12 includes a second female and male mold 121, an elastic frame 122, and a pressure plate 123. The second female and male die 121 is made of a metal material, preferably Cr12 steel. The Cr12 steel is subjected to heat treatment quenching (HRC 58-62), then is subjected to linear cutting and electric machining forming, the cutting edge is ground by a bench worker to be kept sharp, and the dimensional accuracy and the smoothness of the second concave-convex die 121 are guaranteed. The lower end of the second male and female die 121 is fixedly connected with the fixing plate 11. The outer side of the first female and male die 222 is positioned at the outer side of the second female and male die 121, so that the first female and male die 222 can be in contact with the upper side of the pressure plate 123 after moving down. The elastic frame 122 is sleeved on the second concave-convex die 121, the lower side of the elastic frame is fixedly connected with the fixing plate 11, and the upper side of the elastic frame is flush with the upper side of the second concave-convex die 121. The pressing plate 123 is provided with a through hole corresponding to the second male-female die 121, the lower side of the pressing plate 123 is detachably connected with the elastic frame 122 through a positioning structure, and the pressing plate 123 can be sleeved into the second male-female die 121 through the through hole and forms sliding fit with the second male-female die 121 in the up-and-down moving process. In specific implementation, the pressure plate 123 is made of carbon steel, and is subjected to upper and lower surface flat grinding, linear cutting and electric machining forming after thermal treatment and tempering (HRC 25-30) are required, so that the parallelism and the working surface smoothness of the pressure plate 123 are ensured. The positioning structure comprises a positioning block and a positioning groove. A plurality of positioning blocks are arranged on the lower side of the pressing plate 123 around the circumference of the pressing plate, positioning grooves corresponding to the positioning blocks are arranged on the upper side of the elastic frame 122, and the positioning blocks are positioned in the positioning grooves, so that when the pressing plate 123 moves downwards under the action of the first concave-convex die 222 during punching, the pressing plate is guided by the positioning blocks and the positioning grooves, deviation does not occur during punching, and the punching precision is improved. The second concave-convex die 121 has a cavity for forming a through hole in a part, and elastic rubber is filled in the cavity, and the filled elastic rubber can eject waste materials falling into the cavity. Like this, after the waste material that washes away when the through-hole that takes shape gets into the die cavity of second concavo-convex mould 121, the elasticity rubber of die cavity intussuseption can rely on its own elasticity to push out the die cavity with the waste material, is convenient for clear up the mould.
The first concave-convex die 222 of the cold stamping die is made of polyurethane materials, the first concave-convex die 222 is embedded in the upper die sleeve 221 to limit the first concave-convex die 222, and the second concave-convex die 121 of the cold stamping die is made of metal materials, so that the formed cold stamping die is gapless stamping of a half hard die and a half soft die. During stamping, the polyurethane in a closed state is compressed to generate larger unit pressure, and the specified procedures are completed by using the counter force of elastic deformation, such as: punching, blanking, cutting, bending and forming metal and nonmetal, so that the punched sheet part has flat surface, no burr and no fold and high qualification rate. Compared with the traditional steel die, the die does not need the working clearance between the male die and the female die, integrates the male die and the female die, reduces the manufacturing and assembling precision of the die, and shortens the manufacturing period and the manufacturing cost of the die. And the efficiency can be improved in the process of stamping the sheet parts, the production cost of the sheet parts is reduced, and the method is suitable for stamping batch production of the sheet parts.
Use the utility model provides a cold stamping die punching press thin slice part of thin slice part, concrete operating procedure as follows:
1. cleaning: in the process of producing the sheet part by cold stamping, a punch and a die need to be cleaned. In particular, tiny particles on a working surface can be extruded on the surface of a part, the quality of the part is affected, and the part needs to be cleaned. Lubricating oil is added to matching surfaces of the guide sleeve 23 and the guide column 13, so that the upper die base 2 and the lower die base 1 can be freely opened and closed and stably run.
2. Clamping: the upper die holder 2 is arranged on the working surface of the punch press, the closing height of the punch press is manually adjusted, the punch handle 24 of the upper die holder 2 is guided into the punch handle 24 hole of the punch press sliding block, and the punch handle 24 is clamped by pulling the screw after the punch handle is in place. Two corners of the lower die holder 1 are pressed by a pressing plate, a screw and a sizing block, the screw is wrenched, and the upper die holder 2 and the lower die holder 1 which are fixed are required to be stable and reliable.
3. Debugging the punch press: and manually adjusting a flywheel of the punch press, enabling the punch press slide block to move upwards, opening and closing the die (the lower die holder 1 is fixed, and the upper die holder 2 reciprocates under the guiding positioning of the guide column 13 and the guide sleeve 23), opening and closing for several times, adjusting the closing height of the punch press slide block, and switching on a power supply of the punch press to test the die after the height requirement of the punched part is met.
4. Testing a mold: the material sheet is placed into the working face of the die for positioning, the brake pedal is triggered, and the upper die base 2 moves up and down once along with the sliding block of the punch press to complete one-time punching. When the upper die holder 2 moves to a closed state, the first concave-convex die 222 and the material pressing plate 123 compress the material sheet to complete rib forming, and the first concave-convex die 222 is matched with the second concave-convex die 121 to punch and blank (cut) parts under the action of continuous operation of the first concave-convex die 222. When the punch press sliding block moves to the bottom dead center, the part is separated from the waste (if the part is not separated, the closing height of the punch press can be adjusted, the part is gradually deepened), the punch press sliding block continues to move, the upper die base 2 is separated from the lower die base 1, and the waste is ejected out of the elastic rubber in the cavity of the second concave-convex die 121. And taking out the parts and the waste materials to complete the stamping trial production of the parts at one time.
5. And after the test die parts are qualified, the batch stamping production can be carried out.
Adopt the utility model provides a cold stamping die punching press suspension part 3 of thin slice part, this suspension part 3 is made by beryllium bronze (Qbe 2 GB/T5231-2001), and thickness 0.03 mm. The suspension component 3 has a structure as shown in fig. 6, and the suspension component 3 obtained by stamping has a flat surface, no burr and no wrinkle, and is high in yield.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.
Claims (6)
1. A cold stamping die for thin sheet parts comprises a lower die holder and an upper die holder, wherein a fixed plate is arranged in the middle of the lower die holder, and a base plate is arranged on the upper die holder corresponding to the fixed plate; a lower die is fixed on the fixing plate, an upper die is fixed on the backing plate, and the lower die and the upper die are opposite; two ends of the lower die holder are respectively provided with a guide post, the positions of the upper die holder corresponding to the two guide posts are respectively provided with a guide sleeve, the guide sleeves are sleeved on the guide posts and are connected with the guide posts in a sliding fit manner, and the upper die can move downwards until the lower die is contacted; the die is characterized in that the upper die comprises an upper die sleeve and a first concave-convex die; the upper side of the upper die sleeve is fixed with the base plate, the lower side of the upper die sleeve is provided with a die cavity, the first concave-convex die is embedded in the die cavity and is fixedly connected with the upper die sleeve through a locking screw, and the first concave-convex die is made of polyurethane material;
the lower die comprises a second concave-convex die, an elastic frame and a pressure plate; the second concave-convex die is made of metal materials, and the lower end of the second concave-convex die is fixedly connected with the fixing plate; the elastic frame is sleeved on the second concave-convex die, the lower side of the elastic frame is fixedly connected with the fixing plate, and the upper side of the elastic frame is flush with the upper side of the second concave-convex die; the pressure plate is provided with a through hole corresponding to the second male-female die, the lower side of the pressure plate is detachably connected with the elastic frame through the positioning structure, and the pressure plate can be sleeved in the second male-female die through the through hole in the up-and-down moving process and forms sliding fit with the second male-female die.
2. The sheet part cold stamping die according to claim 1, wherein the polyurethane of the first concave-convex die is a polyurethane material with a shore hardness of A85-95 degrees.
3. A cold-stamping die for sheet parts as claimed in claim 1, wherein the second male and female die has a cavity for forming the through-hole in the part, and the cavity is filled with an elastic rubber.
4. A die for cold stamping a sheet part according to claim 1, wherein the outer side of the first die is located outside the second die.
5. The sheet part cold stamping die according to claim 1, wherein the positioning structure comprises a positioning block and a positioning groove; the lower side of the material pressing plate is provided with a plurality of positioning blocks around the circumference of the material pressing plate, the upper side of the elastic frame is provided with positioning grooves corresponding to the positioning blocks, and the positioning blocks are positioned in the positioning grooves.
6. The cold stamping die for sheet parts as claimed in claim 1, wherein the upper end of the guide sleeve penetrates through the upper side of the upper die base, and the lower end of the guide sleeve is sleeved into the guide post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922381115.0U CN211218255U (en) | 2019-12-26 | 2019-12-26 | Cold stamping die for sheet parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922381115.0U CN211218255U (en) | 2019-12-26 | 2019-12-26 | Cold stamping die for sheet parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211218255U true CN211218255U (en) | 2020-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922381115.0U Expired - Fee Related CN211218255U (en) | 2019-12-26 | 2019-12-26 | Cold stamping die for sheet parts |
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| Country | Link |
|---|---|
| CN (1) | CN211218255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899465A (en) * | 2019-12-26 | 2020-03-24 | 重庆华渝电气集团有限公司 | A cold stamping die for thin sheet parts |
-
2019
- 2019-12-26 CN CN201922381115.0U patent/CN211218255U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110899465A (en) * | 2019-12-26 | 2020-03-24 | 重庆华渝电气集团有限公司 | A cold stamping die for thin sheet parts |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200811 Termination date: 20211226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |