CN111660602A - Adjustable die for processing die steel - Google Patents
Adjustable die for processing die steel Download PDFInfo
- Publication number
- CN111660602A CN111660602A CN202010519877.7A CN202010519877A CN111660602A CN 111660602 A CN111660602 A CN 111660602A CN 202010519877 A CN202010519877 A CN 202010519877A CN 111660602 A CN111660602 A CN 111660602A
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- mounting groove
- die
- hydraulic cylinder
- pressing plate
- plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0076—Noise or vibration isolation means
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Abstract
The invention discloses an adjustable die for processing die steel, which comprises a supporting plate, an upper hydraulic cylinder and a lower hydraulic cylinder, one surface of the supporting plate is symmetrically provided with slide rails, the two slide rails are matched and are sequentially connected with an upper slide block and a lower slide block in a sliding way from top to bottom, the upper hydraulic cylinder and the lower hydraulic cylinder are respectively fixed on the upper end and the lower end of the supporting plate, the output end of the upper hydraulic cylinder is fixedly arranged on the top end surface of the upper sliding block, the output end of the lower hydraulic cylinder is fixedly arranged on the bottom end surface of the lower slide block, the surfaces of the upper slide block opposite to the lower slide block are respectively provided with an upper mounting groove and a lower mounting groove, the upper mounting groove is internally and slidably connected with an upper pressing plate, and the two side walls of the inner part of the upper mounting groove are symmetrically provided with vertical slideways.
Description
Technical Field
The invention relates to the technical field of dies, in particular to an adjustable die for die steel processing.
Background
Die steel is a steel grade used for manufacturing dies such as cold stamping dies, hot forging dies, die casting dies and the like. The die is a main processing tool for manufacturing parts in industrial departments of mechanical manufacturing, radio instruments, motors, electric appliances and the like. The die steel can be roughly divided into cold-rolled die steel, hot-rolled die steel and plastic die steel, and is used for forging, stamping, cutting, die-casting and the like. Because of the complicated working conditions and different applications of various dies, the die steel should have high hardness, strength, wear resistance, sufficient toughness, and high hardenability, and other processing properties according to the working conditions of the die manufactured from the die steel. Since such applications are different and the working conditions are complicated, the performance requirements for the steel for molds are also different.
Current mould is at the extrusion in-process, all can be equipped with buffer gear, it is too big to prevent the upper and lower mould impact force, cause the damage of product part, wherein buffer gear's buffering dynamics should not too big also should not the undersize, the undersize plays not to play the cushioning effect and still can cause the product part to damage, too big unable completion extrusion, the unable adjustment buffering dynamics of current buffer gear to unable debugging to the mould, buffer gear's too big or undersize phenomenon will appear.
Disclosure of Invention
The invention aims to provide an adjustable die for die steel processing, which aims to solve the problems that the buffering force of a buffering mechanism is too large or too small due to the fact that the existing buffering mechanism cannot adjust the buffering force, so that the die cannot be debugged in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an adjustment formula mould for mould steel processing, includes backup pad, last pneumatic cylinder and lower pneumatic cylinder, a surface symmetry of backup pad is equipped with the slide rail, two the slide rail cooperatees and from last to sliding connection has slider and lower slider in proper order down, go up pneumatic cylinder and lower pneumatic cylinder and fix respectively on the upper and lower end of backup pad, the output fixed mounting of going up the pneumatic cylinder is on the top face of slider, the output fixed mounting of lower pneumatic cylinder is on the bottom face of slider down, the face that the slider is relative with the lower slider is equipped with mounting groove and lower mounting groove respectively, the inside sliding connection of going up the mounting groove has the top board, the inside both sides wall symmetry of going up the mounting groove is equipped with vertical slide, the both ends symmetry of top board is equipped with vertical slider, two vertical slider sliding connection is two respectively in vertical slide, the inside of going up the mounting groove just is located and is equipped with the buffering adjustment machine between the upper surface in top board and the mounting groove Construct, the lower fixed surface of top board installs the mould, go up the mould and stretch out outside the mounting groove, the inside sliding connection of mounting groove has the holding down plate down, the inside both sides wall symmetry of mounting groove is equipped with transverse slide down, the both ends symmetry of holding down plate is equipped with transverse slide, two transverse slide difference sliding connection is two in the transverse slide, be equipped with rubber buffer block between the one end of holding down plate and the one end wall in the mounting groove down, another end wall in the mounting groove runs through threaded hole down, threaded hole female connection screw thread adjusting rod, the one end that screw thread adjusting rod is located mounting groove down rotates and is connected on the another end of holding down plate, the last fixed surface of holding down plate installs the bed die, the bed die stretches out outside the mounting groove down.
Preferably, buffering guiding mechanism includes the buffer board, the buffer board sets up the inside at last mounting groove, be equipped with a plurality of buffer spring between buffer board and the top board, the inside upper surface symmetry of going up the mounting groove has run through the guiding hole, sliding connection has the guide bar in the guiding hole, the bottom fixed mounting of guide bar is at the upper surface position of top board, the inside upper surface of going up the mounting groove just is located and is equipped with the adjustment tank between two guiding holes, the inside rotation of adjustment tank is connected with the cam, the wheel wall laminating of cam is at the upper surface position of buffer board, the lateral wall of top block rotates and is connected with adjust knob, the inside wall of adjustment tank runs through threaded hole, adjust knob's one end threaded connection in the threaded hole and with cam fixed connection.
Preferably, the two side walls of the supporting plate are symmetrically provided with supporting columns.
Preferably, the upper end and the lower end of the supporting plate are both provided with a baffle plate, and the upper hydraulic cylinder and the lower hydraulic cylinder are respectively arranged on the two baffle plates.
Preferably, a rotating handle is arranged at one end of the thread adjusting rod, which is positioned outside the lower mounting groove.
Preferably, the upper die and the lower die are both made of alloy steel materials.
Compared with the prior art, the invention has the beneficial effects that: an adjustable die for processing die steel, an upper sliding block and a lower sliding block can be controlled to slide through the matching arrangement of an upper hydraulic cylinder and a lower hydraulic cylinder, an upper pressing plate can be positioned in an upper mounting groove to slide through the matching arrangement of a vertical slide way and a vertical sliding block, the upper pressing plate has a buffering effect through the matching arrangement of a plurality of buffer springs, the upper pressing plate can be properly debugged and adjusted through the matching arrangement of a cam and an adjusting knob when the adjusting knob is rotated, the cam can be positioned in the adjusting groove to rotate, the cam can downwards press the upper pressing plate to tighten the buffer springs, the tighter the buffer force is smaller, the lower pressing plate can be positioned in the lower mounting groove to slide through the matching arrangement of a transverse slide way and a transverse sliding block, the proper debugging and adjusting knob is adjusted according to the performance of a product part obtained by the extrusion of the upper die and a lower grinding tool, the yield of the product part is higher, the performance is stronger, the lower pressing plate, the lower pressing plate can be fixed, the rubber buffer block plays a role in transversely buffering the lower pressing plate, and the transverse impact force is generally small, so that the impact force can be removed by adopting the rubber buffer block, and the stability of the lower die and the upper die is improved.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic sectional view of the upper slider in a front view;
FIG. 3 is a schematic front view of the upper slider of the present invention;
FIG. 4 is a schematic top cross-sectional view of the lower slider of the present invention;
fig. 5 is a schematic top view of the present invention.
In the figure: the device comprises a support plate 1, an upper hydraulic cylinder 2, a lower hydraulic cylinder 3, a sliding rail 4, an upper sliding block 5, a lower sliding block 6, an upper pressing plate 7, a vertical slideway 8, a vertical sliding block 9, an upper die 10, a lower pressing plate 11, a horizontal slideway 12, a horizontal sliding block 13, a rubber buffer block 14, a thread adjusting rod 15, a lower die 16, a buffer plate 17, a buffer spring 18, a guide rod 19, an adjusting groove 20, a cam 21 and an adjusting knob 22.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: an adjustable die for processing die steel comprises a supporting plate 1, an upper hydraulic cylinder 2 and a lower hydraulic cylinder 3, wherein slide rails 4 are symmetrically arranged on one surface of the supporting plate 1, the two slide rails 4 are matched and are sequentially connected with an upper sliding block 5 and a lower sliding block 6 from top to bottom in a sliding manner, the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3 are respectively fixed on the upper end and the lower end of the supporting plate 1, the output end of the upper hydraulic cylinder 2 is fixedly installed on the top end face of the upper sliding block 5, the output end of the lower hydraulic cylinder 3 is fixedly installed on the bottom end face of the lower sliding block 6, the upper sliding block 5 and the lower sliding block 6 can be controlled to slide through the matching arrangement of the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3, the faces, opposite to the upper sliding block 5 and the lower sliding block 6, are respectively provided with an upper installation groove and a lower installation groove, the inside of the upper installation groove is slidably connected with an upper pressing plate 7, the two ends of the upper pressing plate 7 are symmetrically provided with vertical sliding blocks 9, the two vertical sliding blocks 9 are respectively connected in the two vertical sliding ways 8 in a sliding manner, the upper pressing plate 7 can be positioned in the upper mounting groove to slide through the matching arrangement of the vertical sliding ways 8 and the vertical sliding blocks 9, a buffering adjusting mechanism is arranged in the upper mounting groove and between the upper pressing plate 7 and the upper surface in the upper mounting groove, the lower surface of the upper pressing plate 7 is fixedly provided with an upper die 10, the upper die 10 extends out of the upper mounting groove, the inner part of the lower mounting groove is connected with a lower pressing plate 11 in a sliding manner, the two side walls in the inner part of the lower mounting groove are symmetrically provided with transverse sliding ways 12, the two ends of the lower pressing plate 11 are symmetrically provided with transverse sliding blocks 13, the two transverse sliding blocks 13 are respectively connected in the two transverse sliding ways 12 in a sliding manner, and the lower pressing plate 11 can be, be equipped with rubber buffer block 14 between the one end of holding down plate 11 and the one end wall in the lower mounting groove, another end wall in the mounting groove runs through threaded hole down, threaded hole female connection screw thread adjusting rod 15, screw thread adjusting rod 15 is located the one end rotation connection in the mounting groove down on the other end of holding down plate 11, sets up through the cooperation of rubber buffer block 14 and screw thread adjusting rod 15, can fix holding down plate 11, and rubber buffer block 14 plays the effect of horizontal buffering to holding down plate 11, and general horizontal impact force is less, so adopt rubber buffer block 14 just can unload the impact force, increase the stability of holding down die 16 and last mould 10, the last fixed surface of holding down plate 11 installs holding down die 16, holding down die 16 stretches out outside the mounting groove.
Specifically, the buffering adjustment mechanism comprises a buffering plate 17, the buffering plate 17 is arranged inside an upper mounting groove, a plurality of buffering springs 18 are arranged between the buffering plate 17 and the upper pressing plate 7, guide holes are symmetrically penetrated through the inner upper surface of the upper mounting groove, guide rods 19 are slidably connected in the guide holes, the bottom ends of the guide rods 19 are fixedly mounted on the upper surface of the upper pressing plate 7, the buffering plate 17 can be guided through the guide holes and the guide rods 19 in a matching manner, the buffering plate 17 is prevented from being deviated, an adjustment groove 20 is arranged on the inner upper surface of the upper mounting groove and between the two guide holes, a cam 21 is rotatably connected inside the adjustment groove 20, the wheel wall of the cam 21 is attached to the upper surface of the buffering plate 17, an adjustment knob 22 is rotatably connected to the outer side wall of the upper sliding block 5, and a threaded hole is penetrated through the inner side wall of the adjustment groove 20, one end of the adjusting knob 22 is in threaded connection with the threaded hole and is fixedly connected with the cam 21, the cam 21 and the adjusting knob 22 are arranged in a matched mode, when the adjusting knob 22 is rotated, the cam 21 can be located in the adjusting groove 20 to rotate, the cam 21 presses the pressing plate 7 downwards to enable the buffer spring 18 to be tightened, the tighter the buffer force is, the smaller the buffer force is, and the adjusting knob 22 is properly adjusted according to the performance of a product part obtained by extruding the upper die 10 and the lower grinding tool 16, so that the yield of the product part is higher, and the performance is stronger.
Particularly, the both sides wall symmetry of backup pad 1 is equipped with the support column, plays supporting role to backup pad 1.
Particularly, the upper end and the lower end of the supporting plate 1 are provided with a baffle, the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3 are respectively arranged on the two baffles, and the two baffles respectively support the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3.
Specifically, the end of the thread adjusting rod 15, which is located outside the lower mounting groove, is provided with a rotating handle, so that the crack adjusting rod 15 can be conveniently rotated.
Specifically, the upper die 10 and the lower die 16 are made of alloy steel material.
The working principle is as follows: according to the invention, the upper sliding block 5 and the lower sliding block 6 can slide on the supporting plate 1 through the matching arrangement of the two sliding rails 4, the upper sliding block 5 and the lower sliding block 6 can be controlled to slide through the matching arrangement of the upper hydraulic cylinder 2 and the lower hydraulic cylinder 3, the upper pressing plate 7 can slide in the upper mounting groove through the matching arrangement of the vertical sliding rail 8 and the vertical sliding block 9, the buffer plate 17 can be guided through the matching arrangement of the guide holes and the guide rods 19, the offset of the buffer plate 17 is prevented, the buffer effect is achieved on the upper pressing plate 7 through the matching arrangement of the plurality of buffer springs 18, the cam 21 and the adjusting knob 22 are arranged in a matching way, when the adjusting knob 22 is rotated, the cam 21 can be positioned in the adjusting groove 20 to rotate, the cam 21 presses the upper pressing plate 7 downwards, the buffer springs 18 are tightened, the buffer force is smaller as the tightening is carried out, according to the performance of a product part obtained by extruding the upper die 10 and the lower grinding tool 16, the proper adjusting knob 22 is adjusted to enable the yield of product parts to be higher and the performance to be stronger, the lower pressing plate 11 can be positioned in the lower mounting groove to slide through the matching arrangement of the transverse slide rail 12 and the transverse slide block 13, the lower pressing plate 11 can be fixed through the matching arrangement of the rubber buffer block 14 and the thread adjusting rod 15, the rubber buffer block 14 plays a role in transversely buffering the lower pressing plate 11, the transverse impact force is generally smaller, so the impact force can be removed by adopting the rubber buffer block 14, and the stability of the lower die 16 and the upper die 10 is improved.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an adjustment formula mould for mould steel processing, includes backup pad (1), upper hydraulic cylinder (2) and lower hydraulic cylinder (3), its characterized in that: the device is characterized in that slide rails (4) are symmetrically arranged on one surface of the supporting plate (1), the two slide rails (4) are matched and are sequentially connected with an upper slide block (5) and a lower slide block (6) from top to bottom in a sliding manner, an upper hydraulic cylinder (2) and a lower hydraulic cylinder (3) are respectively fixed on the upper end and the lower end of the supporting plate (1), the output end of the upper hydraulic cylinder (2) is fixedly arranged on the top end face of the upper slide block (5), the output end of the lower hydraulic cylinder (3) is fixedly arranged on the bottom end face of the lower slide block (6), the opposite faces of the upper slide block (5) and the lower slide block (6) are respectively provided with an upper mounting groove and a lower mounting groove, the inner part of the upper mounting groove is slidably connected with an upper pressing plate (7), the two side walls of the inner part of the upper mounting groove are symmetrically provided with vertical slide ways (8), the two ends of the upper pressing plate (7) are symmetrically provided with, a buffering and adjusting mechanism is arranged inside the upper mounting groove and between the upper surface of the upper pressing plate (7) and the upper surface of the upper mounting groove, an upper die (10) is fixedly arranged on the lower surface of the upper pressing plate (7), the upper die (10) extends out of the upper mounting groove, a lower pressing plate (11) is connected inside the lower mounting groove in a sliding manner, transverse sliding ways (12) are symmetrically arranged on two side walls inside the lower mounting groove, transverse sliding blocks (13) are symmetrically arranged at two ends of the lower pressing plate (11), the two transverse sliding blocks (13) are respectively connected inside the two transverse sliding ways (12) in a sliding manner, a rubber buffer block (14) is arranged between one end of the lower pressing plate (11) and one end wall inside the lower mounting groove, a threaded hole penetrates through the other end wall inside the lower mounting groove, a threaded hole is connected with a threaded adjusting rod (15), one end of the threaded adjusting rod (15) inside the lower mounting groove is rotatably connected to the other, the upper surface of the lower pressing plate (11) is fixedly provided with a lower die (16), and the lower die (16) extends out of the lower mounting groove.
2. An adjustable die for die steel processing according to claim 1, wherein: the buffer adjusting mechanism comprises a buffer plate (17), the buffer plate (17) is arranged in an upper mounting groove, a plurality of buffer springs (18) are arranged between the buffer plate (17) and an upper pressing plate (7), guide holes are symmetrically penetrated through the upper surface of the inner part of the upper mounting groove, guide rods (19) are slidably connected in the guide holes, the bottom of each guide rod (19) is fixedly arranged on the upper surface of the upper pressing plate (7), an adjusting groove (20) is arranged on the upper surface of the inner part of the upper mounting groove and between the two guide holes, a cam (21) is rotatably connected in the adjusting groove (20), the wheel wall of the cam (21) is attached to the upper surface of the buffer plate (17), an adjusting knob (22) is rotatably connected to the outer side wall of an upper sliding block (5), and a threaded hole is penetrated through the inner side wall of the adjusting groove (20), one end of the adjusting knob (22) is connected in the threaded hole in a threaded manner and is fixedly connected with the cam (21).
3. An adjustable die for die steel processing according to claim 1, wherein: and support columns are symmetrically arranged on two side walls of the support plate (1).
4. An adjustable die for die steel processing according to claim 1, wherein: the upper end and the lower end of the supporting plate (1) are respectively provided with a baffle, and the upper hydraulic cylinder (2) and the lower hydraulic cylinder (3) are respectively arranged on the two baffles.
5. An adjustable die for die steel processing according to claim 1, wherein: and a rotating handle is arranged at one end of the thread adjusting rod (15) positioned outside the lower mounting groove.
6. An adjustable die for die steel processing according to claim 1, wherein: the upper die (10) and the lower die (16) are both made of alloy steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010519877.7A CN111660602A (en) | 2020-06-09 | 2020-06-09 | Adjustable die for processing die steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010519877.7A CN111660602A (en) | 2020-06-09 | 2020-06-09 | Adjustable die for processing die steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111660602A true CN111660602A (en) | 2020-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010519877.7A Pending CN111660602A (en) | 2020-06-09 | 2020-06-09 | Adjustable die for processing die steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111660602A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10113964A (en) * | 1996-10-09 | 1998-05-06 | Nissei Plastics Ind Co | Motor-operated toggle type vertical mold clamping apparatus |
| CN208046408U (en) * | 2018-05-04 | 2018-11-02 | 临沂大学 | A kind of equipment for producing rotor last item |
| CN208484289U (en) * | 2018-06-01 | 2019-02-12 | 南京双星塑料模具有限公司 | A kind of die for punching machine with buffer gear |
| CN208593002U (en) * | 2018-03-20 | 2019-03-12 | 福建省永春佳威塑料包装制品有限公司 | A kind of plastic products processing unit (plant) |
| CN209021010U (en) * | 2018-08-13 | 2019-06-25 | 安徽金石拓机械有限公司 | A kind of press machine that load-bearing capacity is strong |
| CN209077588U (en) * | 2018-10-22 | 2019-07-09 | 十堰市雄振汽车零部件有限公司 | A kind of lateral coaming plate movable type disposal molding mold |
| CN209969366U (en) * | 2019-04-03 | 2020-01-21 | 河源市全诚硬质合金有限公司 | Two-way pressing hard alloy die |
| CN210231150U (en) * | 2019-07-03 | 2020-04-03 | 广州奥图弹簧有限公司 | Stamping device convenient to adjust for production of automobile engine connecting piece |
| CN210334012U (en) * | 2019-07-16 | 2020-04-17 | 扬州四通粉末冶金有限公司 | Eccentric disc mould |
| CN210632773U (en) * | 2019-10-10 | 2020-05-29 | 昆山泰立德精密机械有限公司 | Processing die for cylindrical stamping and drawing workpiece |
-
2020
- 2020-06-09 CN CN202010519877.7A patent/CN111660602A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10113964A (en) * | 1996-10-09 | 1998-05-06 | Nissei Plastics Ind Co | Motor-operated toggle type vertical mold clamping apparatus |
| CN208593002U (en) * | 2018-03-20 | 2019-03-12 | 福建省永春佳威塑料包装制品有限公司 | A kind of plastic products processing unit (plant) |
| CN208046408U (en) * | 2018-05-04 | 2018-11-02 | 临沂大学 | A kind of equipment for producing rotor last item |
| CN208484289U (en) * | 2018-06-01 | 2019-02-12 | 南京双星塑料模具有限公司 | A kind of die for punching machine with buffer gear |
| CN209021010U (en) * | 2018-08-13 | 2019-06-25 | 安徽金石拓机械有限公司 | A kind of press machine that load-bearing capacity is strong |
| CN209077588U (en) * | 2018-10-22 | 2019-07-09 | 十堰市雄振汽车零部件有限公司 | A kind of lateral coaming plate movable type disposal molding mold |
| CN209969366U (en) * | 2019-04-03 | 2020-01-21 | 河源市全诚硬质合金有限公司 | Two-way pressing hard alloy die |
| CN210231150U (en) * | 2019-07-03 | 2020-04-03 | 广州奥图弹簧有限公司 | Stamping device convenient to adjust for production of automobile engine connecting piece |
| CN210334012U (en) * | 2019-07-16 | 2020-04-17 | 扬州四通粉末冶金有限公司 | Eccentric disc mould |
| CN210632773U (en) * | 2019-10-10 | 2020-05-29 | 昆山泰立德精密机械有限公司 | Processing die for cylindrical stamping and drawing workpiece |
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Application publication date: 20200915 |
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| RJ01 | Rejection of invention patent application after publication |