CN109382440B - Leveling punching die and continuous punching machine for producing compressor shell - Google Patents
Leveling punching die and continuous punching machine for producing compressor shell Download PDFInfo
- Publication number
- CN109382440B CN109382440B CN201811568597.4A CN201811568597A CN109382440B CN 109382440 B CN109382440 B CN 109382440B CN 201811568597 A CN201811568597 A CN 201811568597A CN 109382440 B CN109382440 B CN 109382440B
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- China
- Prior art keywords
- leveling
- punching
- sliding block
- die
- die holder
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004080 punching Methods 0.000 title claims abstract description 89
- 239000000463 material Substances 0.000 claims abstract description 26
- 238000007599 discharging Methods 0.000 claims description 12
- 210000004907 gland Anatomy 0.000 claims description 11
- 238000007493 shaping process Methods 0.000 claims description 11
- 238000009966 trimming Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 12
- 238000007906 compression Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000009740 moulding (composite fabrication) Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/08—Dies with different parts for several steps in a process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/001—Shaping combined with punching, e.g. stamping and perforating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Presses And Accessory Devices Thereof (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention relates to a leveling and punching die for a green shell, which comprises a male die component and a female die component, wherein the male die component comprises a lower die holder, a leveling and punching male die head and a plurality of lower ejector rods are arranged at the top of the lower die holder, a material returning plate is fixedly arranged at the top of all the lower ejector rods, a leveling and punching device is arranged at the top of the lower die holder, the leveling and punching device comprises a fixed seat, a sliding rail is arranged at one end of the fixed seat, a leveling sliding block is arranged on the sliding rail, a leveling punch is arranged at the front end of the leveling sliding block, an inclined plane A is arranged at the top of the rear end of the leveling sliding block, a punching sliding block is arranged in the punching sliding block, a punching needle is arranged at the front end of the punching sliding block, the rear end of the punching sliding block penetrates out of the leveling sliding block and is provided with an inclined plane B, and an elastic reset device for resetting the leveling sliding block and the punching sliding block is arranged on the fixed seat; the female die assembly comprises an upper die holder, wherein the bottom of the upper die holder is provided with a plurality of upper ejector rods and vertical downward inclined slotting tools, and the inclined slotting tools are provided with inclined planes matched with the leveling slide blocks and the punching slide blocks; the invention greatly improves the production efficiency.
Description
Technical Field
The invention relates to the technical field of compressor shell production, in particular to a leveling punching die and a continuous punching machine for producing a compressor shell.
Background
The shell is a carrier of each part of the hermetic compressor, the production of the shell is mainly produced by a punch press at present, after the plate material is fed, the plate material is subjected to the processes of stretching, forming, trimming, shaping, punching (hole site A, B), punching (hole site C, D), leveling (hole site A, B) and leveling (hole site C, D) to prepare a finished product, each process is correspondingly provided with a set of die, and the prior production process has the following problems: 1. each set of die is provided with a set of loss parts, and the loss parts need to be replaced after being used for a period of time, so that the running cost is high; 2. the production beat of the whole process is slower, the efficiency is low, and the user requirements are difficult to meet.
Disclosure of Invention
The invention aims to solve the problems of the prior shell production process, and provides a leveling punching die and a continuous punching machine for producing a refrigerator compressor shell, which combine leveling and punching processes into one step and reduce the processes from 8 processes to 6 processes.
The specific scheme of the invention is as follows: a leveling punching die for producing a compressor shell comprises a male die component and a female die component, wherein the male die component comprises a lower die holder, a leveling punching male die head is arranged at the top of the lower die holder, an insert is arranged at each hole position of the shell in the leveling punching male die head, a plurality of through holes are formed in the periphery of the leveling punching male die head in the lower die holder, a lower ejector rod connected with a lower hydraulic cylinder of a punching machine is arranged in each through hole, a stripper plate is fixedly arranged at the top of all the lower ejector rods, a leveling punching device is arranged at each insert of the lower die holder top and positioned at the leveling punching male die head, a fixing seat is arranged at one end of the fixing seat, a sliding rail is arranged on the sliding rail, a leveling sliding block is arranged at the front end of the leveling sliding block, an inclined plane A is arranged at the top of the rear end of the leveling sliding block, a limiting plane connected with the inclined plane A is arranged at the side surface of the rear end of the leveling sliding block, a punching sliding block is arranged in the sliding cavity, a punching needle penetrating out of the leveling sliding block and is arranged at the front end of the leveling sliding block, a support is arranged on the fixing seat, an elastic reset device for leveling sliding block and resetting the leveling sliding block is arranged on the support, and a reset groove is arranged between the support and the sliding rail; the female die assembly comprises an upper die holder, a gland right opposite to the leveling punching male die head is arranged at the bottom of the upper die holder, a plurality of upper ejector rods are arranged on the periphery of the gland, a vertical downward inclined slotting tool is arranged at the position, opposite to the leveling sliding block, of the upper die holder, an inclined boss matched with the inclined plane A is arranged at the bottom of the inclined slotting tool, a stop surface matched with the limiting plane is arranged on the inclined boss, and an inclined plane which avoids the leveling sliding block and is matched with the inclined plane B is arranged at the bottom of the inclined slotting tool.
The elastic resetting device is a rubber spring, a threaded hole is formed in the portion, extending out of the leveling slide block, of the punching slide block, a screw is arranged in the rubber spring, one end of the screw is fixed at one end of the rubber spring through a nut, the other end of the screw is in threaded connection with the punching slide block, and a yielding groove avoiding the screw is formed in the bottom of the oblique slotting tool.
The upper die holder or the lower die holder is provided with a plurality of guide posts, and correspondingly, the lower die holder or the upper die holder is provided with guide sleeves corresponding to the positions of the guide posts.
According to the invention, a cushion sleeve is arranged at the bottom of an upper die holder, a sliding groove is arranged in the cushion sleeve, a movable block is arranged in the sliding groove, the bottom of the movable block extends out of the cushion sleeve and is fixedly connected with a gland, a movable push rod with one end penetrating out of the upper die holder is arranged at the top of the movable block, through holes are arranged in the centers of the movable push rod, the movable block and the gland, a material ejector rod is slidably arranged in the through holes, a sealing plate is fixedly arranged at the top of the movable push rod, and a pressure spring is arranged between the sealing plate and the material ejector rod.
A plurality of guide posts are arranged between the material returning plate and the lower die holder, and the material returning plate moves up and down along the guide posts.
A vertical downward discharging cavity is arranged in the leveling punching convex die head, the discharging cavity is communicated with each hole site, a discharging hole communicated with the discharging cavity is arranged on the lower die holder, and a discharging groove is arranged below the discharging hole.
The invention also provides a continuous punching machine provided with the leveling and punching die, which comprises an upper table top and a lower table top, wherein an upper hydraulic cylinder is arranged in the upper table top, a lower hydraulic cylinder is arranged in the lower table top, a stretching male die assembly, a forming male die assembly, a trimming lower die assembly, a shaping male die assembly, a leveling and punching male die assembly A and a leveling and punching male die assembly B are sequentially arranged on the lower table top from front to back, the stretching female die assembly, the forming female die assembly, the trimming upper die assembly, the shaping female die assembly, the leveling and punching female die assembly A and the leveling and punching female die assembly B are correspondingly arranged on the upper table top, the leveling and punching male die assembly A and the leveling and punching male die assembly B are basically the same in structure and are different in hole position only.
The working principle of the invention is as follows: the production flow is as follows: manually feeding the plate from a feeding station, conveying the plate forward to a stretching station by a mechanical arm, pressing down an upper table surface of a punch press, pressing down an upper ejector rod against a material returning plate, stretching the plate into a preliminary shell shape during die assembly, pressing down the ejector rod against the material returning plate, separating a preliminarily molded material from a stretching male die assembly by the material returning plate, returning, completing stretching at the moment, conveying the material forward along the material returning plate by a subsequent action mechanical arm, and sequentially completing molding, trimming, shaping, leveling and punching (hole position A, B) and leveling and punching (hole position C, D);
the action principle of the leveling and punching die is as follows: the gland of die subassembly pushes down the material, the ejector pin is pushed down the relief plate, wait that die and terrace die cooperation extrude the cambered surface of required product to the bottom dead center, the oblique bayonet knife moves down and contacts with the flattening slider, the oblique boss of oblique bayonet knife promotes the inclined plane A of flattening slider and makes the flattening slider remove forward, after removing the flattening punch flattening material, the backstop face of oblique boss withstands the spacing plane of flattening slider, the upper die holder continues to move down, the inclined plane of oblique bayonet knife contacts with the slider that punches a hole, promote the slider that punches a hole through promoting inclined plane B, the slider that punches a hole promotes the punch needle and removes forward and accomplish the punching a hole, waiting that the action is accomplished, the upper die holder returns upwards, lower ejector pin is moved up against the relief plate, make the material after the flattening punching a hole separate with the terrace die subassembly, elastic reset device drives flattening slider and the slider return that punches a hole simultaneously.
Compared with the prior art, the invention has the following advantages: 1. the leveling process and the punching process are combined into one step, and two steps of actions are completed at the same station, so that the production beat is reduced, and the production efficiency is greatly improved; 2. the 8 working procedures needed by the original process are reduced to 6 working procedures, 2 sets of vulnerable parts are correspondingly reduced, and the running cost is reduced.
Drawings
FIG. 1 is a front view of a continuous punch of the present invention;
FIG. 2 is a view A-A of FIG. 1;
FIG. 3 is view B-B of FIG. 2 (mold assembly closed to punch assembly);
FIG. 4 is an enlarged view at V of FIG. 3;
FIG. 5 is a perspective view of the bevel blade of the present invention;
in the figure: 1-upper table top, 2-lower table top, 3-female die assembly, 31-upper die holder, 32-movable push rod, 33-compression spring, 34-material push rod, 35-movable block, 36-pad sleeve, 37-upper push rod, 38-gland, 39-oblique insert, 310-oblique boss, 311-oblique plane, 312-oblique plane a, 313-stop plane, 314-abdication groove, 4-male die assembly, 41-stripper plate, 42-lower die holder, 43-lower push rod, 44-leveling punch male die head, 45-insert, 46-fixed seat, 47-punch pin, 48-leveling punch, 49-leveling slide block, 410-slide rail, 411-slide cavity, 412-punching slide block, 413-support, 414-elastic reset device, 415-abdication groove, 416-discharge cavity, 417-screw, 418-oblique plane a, 419-limit plane, 420-oblique plane B, 5-punching female die assembly a, 6-leveling male die assembly a, 7-shaping female die assembly, 8-shaping male die assembly, 9-blank station, 10-trimming upper die assembly, 11-lower die assembly, 12-leveling female die assembly, 13-guide die assembly, 13-stretch forming die assembly, and 13-guide die assembly.
Detailed Description
Example 1
Referring to fig. 2-5, the present embodiment is a leveling and punching die, including a male die component and a female die component, the male die component includes a lower die holder 42, a leveling and punching male die 44 is installed at the top of the lower die holder 42, an insert 45 is installed at each hole position of the shell in the leveling and punching male die 44, a plurality of through holes are formed around the leveling and punching male die 44 in the lower die holder 42, a lower ejector rod 43 connected with a lower hydraulic cylinder of the punching machine is installed in each through hole, a stripper plate 41 is fixedly installed at the top of all lower ejector rods 43, a leveling and punching device is installed at each insert 45 of the lower die holder 42 at the top of the lower die holder 42, the leveling and punching device includes a fixing seat 46, a slide rail 410 is installed at one end of the fixing seat 46, a leveling slide 49 is installed on the slide rail 410, a leveling punch 48 is installed at the front end of the leveling slide rail 49, a slide rail 418 is installed at the top of the rear end of the leveling punch 49, a sliding cavity 411 is installed at the rear end, a sliding block 411 is installed in the sliding cavity, a sliding block 412 is installed at the front end of the leveling punch pin 47, a punch pin 47 passing through the punch 48 is installed at the sliding block 412, a back end of the leveling punch 412 is installed at the sliding block 420, a reset seat 413 is installed at the reset seat 413, and an elastic support 413 is installed at the reset seat 413 is installed between the leveling slide seat 413 and the slide seat 46; the female die assembly comprises an upper die holder 31, a gland 38 which is over against a leveling punching male die head 44 is arranged at the bottom of the upper die holder 31, a plurality of upper ejector rods 37 are arranged on the periphery of the gland 38, a vertical downward inclined slotting tool 39 is arranged at the position of the upper die holder 31 over against a leveling sliding block 49, an inclined boss 310 matched with an inclined plane A418 is arranged at the bottom of the inclined slotting tool 39, an inclined plane a312 matched with the inclined plane A418 is arranged on the inclined boss 310, a stop surface 313 matched with the limiting plane 419 is arranged on the inclined boss 310, and an inclined plane 311 which is away from the leveling sliding block 49 and matched with an inclined plane B420 is arranged at the bottom of the inclined slotting tool 39.
In this embodiment, the elastic resetting device 414 is a rubber spring, a threaded hole is formed in a portion of the punching slider 412 extending out of the leveling slider 49, a screw 417 is installed in the rubber spring, one end of the screw 417 is fixed at one end of the rubber spring through a nut, the other end of the screw 417 passes through the support 413 and is in threaded connection with the punching slider 412, and a relief groove 314 avoiding the screw 417 is formed in the bottom of the oblique cutting tool 39.
In this embodiment, the upper die holder 31 is provided with a plurality of guide posts, and correspondingly, the lower die holder 42 is provided with guide sleeves 17 corresponding to the positions of the guide posts (alternatively, the lower die holder 42 may be provided with guide posts, and the upper die holder 31 is provided with guide sleeves 17).
In this embodiment, a cushion sleeve 36 is installed at the bottom of the upper die holder 31, a chute is provided in the cushion sleeve 36, a movable block 35 is installed in the chute, the bottom of the movable block 35 extends out of the cushion sleeve 36 and is fixedly connected with the gland 38, a movable push rod 32 with one end penetrating out of the upper die holder 31 is installed at the top of the movable block 35, through holes are provided at the centers of the movable push rod 32, the movable block 35 and the gland 38, a material push rod 34 is slidingly installed in the through holes, a sealing plate is fixedly installed at the top of the movable push rod 32, and a pressure spring 33 is installed between the sealing plate and the material push rod 34.
In this embodiment, a plurality of guide posts are installed between the material returning plate 41 and the lower die holder 42, and the material returning plate 41 moves up and down along the guide posts.
In the embodiment, a vertical downward discharge cavity 416 is arranged in the leveling punching male die head 44, the discharge cavity 416 is communicated with each hole site, the lower die holder 42 is provided with a discharge hole communicated with the discharge cavity 416, and a discharge groove 16 is arranged below the discharge hole.
Example two
Referring to fig. 1, this embodiment further provides a continuous punching machine equipped with the leveling and punching die according to the first embodiment, including an upper table top 1 and a lower table top 2, in which an upper hydraulic cylinder is installed in the upper table top 1, a lower hydraulic cylinder is installed in the lower table top 2, and a stretching punch assembly 14, a forming punch assembly 12, a trimming lower die assembly 10, a shaping punch assembly 7, a leveling and punching punch assembly A5 and a leveling and punching punch assembly B3 are installed on the lower table top 2 sequentially from front to back, and a stretching die assembly 15, a forming die assembly 13, a trimming upper die assembly 11, a shaping die assembly 8, a leveling and punching die assembly A6 and a leveling and punching die assembly B4 are installed on the upper table top 1 correspondingly, and the leveling and punching punch assembly A5 and the leveling and punching punch assembly B3 have substantially the same structure and only different hole positions.
Example III
The structure of the present embodiment is basically the same as that of the second embodiment, except that two idle steps 9 are provided between the trimming upper die assembly 11 and the shaping die assembly 8 (in order to meet the actual production requirement, the idle steps 9 may be provided between any two other idle steps).
Claims (7)
1. A flattening cut-out press for producing compressor casing, including terrace die subassembly and die subassembly, characterized by: the male die assembly comprises a lower die holder, a leveling and punching male die head is arranged at the top of the lower die holder, an insert is arranged at each hole position of the shell in the leveling and punching male die head, a plurality of through holes are formed in the periphery of the leveling and punching male die head in the lower die holder, a lower ejector rod connected with a lower hydraulic cylinder of the punch press is arranged in each through hole, a material returning plate is fixedly arranged at the top of all lower ejector rods, a leveling and punching device is arranged at each insert of the leveling and punching male die head at the top of the lower die holder, the leveling and punching device comprises a fixing seat, a sliding rail is arranged at one end of the fixing seat, a leveling sliding block is arranged on the sliding rail, a leveling punch is arranged at the front end of the leveling sliding block, an inclined plane A is arranged at the top of the rear end side face of the leveling sliding block, a punching sliding block is arranged in the sliding cavity, a punching needle penetrating out of the leveling sliding block is arranged at the front end of the punching sliding block, a supporting seat is arranged on the fixing seat, an elastic reset device used for resetting the leveling sliding block and the punching block is arranged on the supporting seat, and a yielding groove is arranged between the supporting seat and the sliding rail; the female die assembly comprises an upper die holder, a gland right opposite to the leveling punching male die head is arranged at the bottom of the upper die holder, a plurality of upper ejector rods are arranged on the periphery of the gland, a vertical downward inclined slotting tool is arranged at the position, opposite to the leveling sliding block, of the upper die holder, an inclined boss matched with the inclined plane A is arranged at the bottom of the inclined slotting tool, a stop surface matched with the limiting plane is arranged on the inclined boss, and an inclined plane which avoids the leveling sliding block and is matched with the inclined plane B is arranged at the bottom of the inclined slotting tool.
2. A flattening punch die for producing compressor shells according to claim 1, wherein: the elastic resetting device is a rubber spring, a threaded hole is formed in the portion, extending out of the leveling slide block, of the punching slide block, a screw is arranged in the rubber spring, one end of the screw is fixed to one end of the rubber spring through a nut, the other end of the screw is in threaded connection with the punching slide block, and a yielding groove avoiding the screw is formed in the bottom of the oblique slotting tool.
3. A flattening punch die for producing compressor shells according to claim 1, wherein: the upper die holder or the lower die holder is provided with a plurality of guide posts, and correspondingly, the lower die holder or the upper die holder is provided with guide sleeves corresponding to the positions of the guide posts.
4. A flattening punch die for producing compressor shells according to claim 1, wherein: the upper die holder is characterized in that a cushion sleeve is arranged at the bottom of the upper die holder, a sliding groove is arranged in the cushion sleeve, a movable block is arranged in the sliding groove, the bottom of the movable block extends out of the cushion sleeve and is fixedly connected with the pressing cover, a movable push rod with one end penetrating out of the upper die holder is arranged at the top of the movable block, through holes are formed in the centers of the movable push rod, the movable block and the pressing cover, a material ejector rod is slidably arranged in the through holes, a sealing plate is fixedly arranged at the top of the movable push rod, and a pressure spring is arranged between the sealing plate and the material ejector rod.
5. A flattening punch die for producing compressor shells according to claim 1, wherein: a plurality of guide posts are arranged between the material returning plate and the lower die holder, and the material returning plate moves up and down along the guide posts.
6. A flattening punch die for producing compressor shells according to claim 1, wherein: the leveling punching convex die head is internally provided with a vertical downward discharging cavity, the discharging cavity is communicated with each hole site, the lower die holder is provided with a discharging hole communicated with the discharging cavity, and a discharging groove is arranged below the discharging hole.
7. A continuous punch press equipped with the leveling punching die as set forth in any one of claims 1 to 6, comprising an upper table top, a lower table top, an upper hydraulic cylinder is equipped in the upper table top, a lower hydraulic cylinder is equipped in the lower table top, characterized in that: the lower table top is provided with a stretching male die assembly, a forming male die assembly, a trimming lower die assembly, a shaping male die assembly, a leveling punching male die assembly A and a leveling punching male die assembly B from front to back in sequence, and the upper table top is correspondingly provided with a stretching female die assembly, a forming female die assembly, a trimming upper die assembly, a shaping female die assembly, a leveling punching female die assembly A and a leveling punching female die assembly B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568597.4A CN109382440B (en) | 2018-12-21 | 2018-12-21 | Leveling punching die and continuous punching machine for producing compressor shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811568597.4A CN109382440B (en) | 2018-12-21 | 2018-12-21 | Leveling punching die and continuous punching machine for producing compressor shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109382440A CN109382440A (en) | 2019-02-26 |
| CN109382440B true CN109382440B (en) | 2024-01-26 |
Family
ID=65430606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811568597.4A Active CN109382440B (en) | 2018-12-21 | 2018-12-21 | Leveling punching die and continuous punching machine for producing compressor shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109382440B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000018128A (en) * | 2000-01-13 | 2000-04-06 | 박국철 | Washer manufacturing equipment |
| CN202779384U (en) * | 2012-07-17 | 2013-03-13 | 四川奥格科技有限公司 | Punching die with convex dies capable of moving horizontally |
| CN107020328A (en) * | 2017-06-20 | 2017-08-08 | 江西江铃底盘股份有限公司 | A kind of integration processing composite die group of automobile drive axle housing lid |
| CN107214244A (en) * | 2017-05-27 | 2017-09-29 | 扬州超人运动器材有限公司 | A kind of multi-faceted angle bar cut-out punching die and angle bar cut-out punching process |
| CN107520334A (en) * | 2017-07-31 | 2017-12-29 | 滁州市艾德模具设备有限公司 | The arc surface punching of progressive die inclined-plane and shaping mould |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209174703U (en) * | 2018-12-21 | 2019-07-30 | 湖北艾博智能装备有限公司 | It is a kind of for producing the leveling punching mold and multiple-die press of compressor housing |
-
2018
- 2018-12-21 CN CN201811568597.4A patent/CN109382440B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000018128A (en) * | 2000-01-13 | 2000-04-06 | 박국철 | Washer manufacturing equipment |
| CN202779384U (en) * | 2012-07-17 | 2013-03-13 | 四川奥格科技有限公司 | Punching die with convex dies capable of moving horizontally |
| CN107214244A (en) * | 2017-05-27 | 2017-09-29 | 扬州超人运动器材有限公司 | A kind of multi-faceted angle bar cut-out punching die and angle bar cut-out punching process |
| CN107020328A (en) * | 2017-06-20 | 2017-08-08 | 江西江铃底盘股份有限公司 | A kind of integration processing composite die group of automobile drive axle housing lid |
| CN107520334A (en) * | 2017-07-31 | 2017-12-29 | 滁州市艾德模具设备有限公司 | The arc surface punching of progressive die inclined-plane and shaping mould |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109382440A (en) | 2019-02-26 |
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