CN110743959A - Automatic punching equipment for gasket manufacturing - Google Patents
Automatic punching equipment for gasket manufacturing Download PDFInfo
- Publication number
- CN110743959A CN110743959A CN201911050970.1A CN201911050970A CN110743959A CN 110743959 A CN110743959 A CN 110743959A CN 201911050970 A CN201911050970 A CN 201911050970A CN 110743959 A CN110743959 A CN 110743959A
- Authority
- CN
- China
- Prior art keywords
- punching
- die
- cut
- gasket
- die holder
- Prior art date
- 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.)
- Pending
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Classifications
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- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
-
- 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
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/14—Dies
-
- 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
- B21D45/00—Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass
- B21D45/06—Stripping-off devices
- B21D45/08—Stripping-off devices interrelated with motion of tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/27—Means for performing other operations combined with cutting
- B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/27—Means for performing other operations combined with cutting
- B26D7/32—Means for performing other operations combined with cutting for conveying or stacking cut product
- B26D2007/322—Means for performing other operations combined with cutting for conveying or stacking cut product the cut products being sheets, e.g. sheets of paper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The invention discloses automatic punching equipment for manufacturing gaskets, belongs to the field of automatic processing equipment, solves the problems of low punching efficiency and difficulty in picking up the gaskets, and has the technical key points that: including the board, die-cut tray, die-cut die holder, die-cut frame, die-cut upper die base and die-cut sword, be equipped with on the board and bear the frame, it is equipped with die-cut tray to bear the upper side on the frame, install die-cut die holder on the die-cut tray, be equipped with a plurality of die-cut holes in the die-cut die holder, can once accomplish the die-cut shaping operation of a plurality of gaskets through die-cut hole and the die-cut sword that set up the array and distribute, and, set up in vacuum pump connection's suction opening at die-cut sword middle part, can adsorb die-cut fashioned gasket in the bottom of die-cut sword, do benefit to upwards absorbing die-cut fashioned gasket, do benefit to the waste material separation with gasket and die-cut die holder and die-cut back.
Description
Technical Field
The invention relates to the field of automatic processing equipment, in particular to automatic punching equipment for manufacturing gaskets.
Background
Gaskets are mechanical seals between two objects, typically to prevent pressure, corrosion, and natural thermal expansion and contraction leakage of the tubing between the two objects. Since the machined surface may not be perfect, the irregularities can be filled using shims. The gasket is typically made of a sheet material.
However, in the actual process of manufacturing the gasket, the size and shape of the gasket are matched with the adaptive mechanism, and the manufacturing equipment is generally strict. In the existing gasket processing equipment, if mass production is not carried out, the research and development of a special automatic punching machine is wasted, so that most of the existing scattered gaskets are processed by using original processing tools such as scissors by hands, and the like.
The automatic punching machine can completely overcome the defects of manual operation, but the conventional automatic punching machine does not have the function of one-time punching forming, the gasket cannot be effectively picked up after punching, time and labor are wasted, and the gasket is difficult to separate from the punched waste, so that the subsequent processing of equipment is influenced. Therefore, it is desirable to provide an automated punching apparatus for spacer fabrication that addresses the above-mentioned problems.
Disclosure of Invention
In view of the defects in the prior art, an object of the embodiments of the present invention is to provide an automatic punching apparatus for manufacturing a gasket, so as to solve the above problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
an automatic punching device for manufacturing gaskets comprises a machine table, a punching tray, a punching lower die holder, a punching rack, a punching upper die holder and a punching knife, wherein a bearing base is arranged on the machine table, a transverse guide rail is arranged on the bearing base, a sliding block is arranged on the transverse guide rail and fixed at the bottom of the punching tray, a transmission screw is connected to the bottom of the punching tray and connected with a servo motor, the punching tray is provided with the punching lower die holder, and a plurality of punching holes are formed in the punching lower die holder;
the bearing machine base is provided with a punching machine frame, the top of the punching machine frame is connected with a positioning support, the positioning support is provided with an air cylinder, the air cylinder is connected with a piston rod, the bottom end of the piston rod is connected with a punching upper die base, and the punching upper die base is provided with a plurality of punching cutters.
As a further scheme of the invention, the sliding block is arranged along the transverse guide rail in a sliding mode.
As a further scheme of the invention, gasket grooves are formed in the punching holes, and the punching holes are distributed on the punching lower die base in a matrix array.
As a further scheme of the invention, the punching cutters are distributed in a matrix array and correspond to the position distribution of a plurality of punching holes on the punching lower die base one by one.
As a further scheme of the invention, the punching hole is in a circular hole shape, the punching cutter is in a cylindrical shape, and the diameter of the punching cutter is equal to the aperture of the punching hole.
As a further scheme of the invention, the middle part of the punching cutter is provided with an air suction hole which is communicated with an air suction pipe, the air suction pipe is connected with a vacuum pump, and the vacuum pump is provided with a pressure release valve.
As a further scheme of the invention, a control box is arranged on the machine table and is respectively connected with the servo motor, the air cylinder and the vacuum pump.
As a further scheme of the invention, the punching cutter is provided with a discharging plate, the discharging plate is provided with a plurality of through holes for the punching cutter to pass through, and the discharging plate is sleeved on the punching cutter.
As a further scheme of the invention, the stripper plate is connected with the punching upper die holder through a plurality of springs.
In summary, compared with the prior art, the embodiment of the invention has the following beneficial effects:
according to the automatic punching equipment for manufacturing the gaskets, punching forming operation of a plurality of gaskets can be completed at one time by arranging the punching holes and the punching knives which are distributed in an array manner, the middle parts of the punching knives are provided with the air suction holes connected with the vacuum pump, the punched and formed gaskets can be adsorbed at the bottoms of the punching knives, the punched and formed gaskets are favorably sucked upwards, the gaskets are favorably separated from the punching lower die seats and punched waste materials, and the discharging plates are additionally arranged, so that punching stability is improved, and the gaskets are favorably separated from the punching waste materials.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the invention.
FIG. 2 is a schematic structural diagram of a lower die holder for die cutting in the embodiment of the invention.
FIG. 3 is a schematic structural diagram of a suction hole on the punching blade in the embodiment of the invention.
Fig. 4 is a schematic structural view of the upper die base connected to the stripper plate in the embodiment of the invention.
FIG. 5 is a schematic structural diagram of a stripper plate in an embodiment of the invention.
Reference numerals: 1-machine table, 2-bearing machine base, 3-transverse guide rail, 4-slide block, 5-punching tray, 6-punching lower die base, 7-punching hole, 8-gasket groove, 9-transmission screw, 10-servo motor, 11-punching frame, 12-positioning support, 13-punching upper die base, 14-air cylinder, 15-piston rod, 16-punching cutter, 17-air suction hole, 18-air suction pipe, 19-vacuum pump, 20-pressure release valve, 21-control box, 22-discharge plate and 23-spring.
Detailed Description
The technical solution of the present invention is further described with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1 to 3, an automatic punching device for manufacturing a gasket comprises a machine table 1, a punching tray 5, a punching lower die holder 6, a punching frame 11, a punching upper die holder 13 and a punching cutter 16, wherein a bearing base 2 is arranged on the machine table 1, a transverse guide rail 3 is arranged on the bearing base 2, a sliding block 4 is arranged on the transverse guide rail 3, the sliding block 4 is arranged along the transverse guide rail 3 in a sliding manner, the sliding block 4 is fixed at the bottom of the punching tray 5, the bottom of the punching tray 5 is connected with a transmission screw 9, and the transmission screw 9 is connected with a servo motor 10; when the servo motor 10 is started, the driving screw 9 is driven to rotate, and the punching tray 5 and the sliding block 4 at the bottom of the punching tray 5 are driven to slide along the transverse guide rail 3, so that the position of the punching tray 5 is convenient to adjust.
The punching tray 5 is provided with a punching lower die holder 6, a plurality of punching holes 7 are formed in the punching lower die holder 6, gasket grooves 8 are formed in the punching holes 7, and the punching holes 7 are distributed on the punching lower die holder 6 in a matrix array mode.
The punching die is characterized in that a punching frame 11 is installed on the bearing base 2, the top of the punching frame 11 is connected with a positioning support 12, an air cylinder 14 is installed on the positioning support 12, the air cylinder 14 is connected with a piston rod 15, the bottom end of the piston rod 15 is connected with a punching upper die base 13, a plurality of punching cutters 16 are installed on the punching upper die base 13, and the punching cutters 16 are distributed in a matrix array mode and are in one-to-one correspondence with the position distribution of a plurality of punching holes 7 on the punching lower die.
The punching hole 7 is in a round hole shape, the punching knife 16 is cylindrical, the diameter of the punching knife 16 is equal to the aperture of the punching hole 7, the punching knife 16 conveniently moves downwards to the punching hole 7, the whole gasket raw material placed on the punching lower die holder 6 is punched into a plurality of gaskets, and the punching knife 16 punches the gasket raw material and presses the gasket raw material into the gasket groove 8.
The middle of the punching cutter 16 is provided with a suction hole 17, the suction hole 17 is communicated with a suction pipe 18, the suction pipe 18 is connected with a vacuum pump 19, the vacuum pump 19 is provided with a pressure release valve 20, after punching is completed, the vacuum pump 19 is started to work, so that a punched and formed gasket in the gasket groove 8 is adsorbed at the bottom of the punching cutter 16 through the suction hole 17, when the punching cutter 16 is driven by the cylinder 14 to move upwards, the punched and formed gasket is driven to be sucked out from the gasket groove 8, and the punched and formed gasket is conveniently collected.
In the invention, the machine table 1 is further provided with a control box 21, and the control box 21 is respectively connected with the servo motor 10, the air cylinder 14 and the vacuum pump 19 and is independently controlled, so that the automatic batch punching operation of the gasket is realized through the punching cutter 16 and the punching hole 7.
Example 2
Referring to fig. 1 to 5, an automatic punching device for manufacturing a gasket comprises a machine table 1, a punching tray 5, a punching lower die holder 6, a punching frame 11, a punching upper die holder 13 and a punching cutter 16, wherein a bearing base 2 is arranged on the machine table 1, a transverse guide rail 3 is arranged on the bearing base 2, a sliding block 4 is arranged on the transverse guide rail 3, the sliding block 4 is arranged along the transverse guide rail 3 in a sliding manner, the sliding block 4 is fixed at the bottom of the punching tray 5, the bottom of the punching tray 5 is connected with a transmission screw 9, and the transmission screw 9 is connected with a servo motor 10; when the servo motor 10 is started, the driving screw 9 is driven to rotate, and the punching tray 5 and the sliding block 4 at the bottom of the punching tray 5 are driven to slide along the transverse guide rail 3, so that the position of the punching tray 5 is convenient to adjust.
The punching tray 5 is provided with a punching lower die holder 6, a plurality of punching holes 7 are formed in the punching lower die holder 6, gasket grooves 8 are formed in the punching holes 7, and the punching holes 7 are distributed on the punching lower die holder 6 in a matrix array mode.
Different from the embodiment 1, in the embodiment of the present invention, the bearing base 2 is provided with a punching frame 11, the top of the punching frame 11 is provided with a positioning bracket 12, the positioning bracket 12 is provided with an air cylinder 14, the air cylinder 14 is connected with a piston rod 15, the bottom end of the piston rod 15 is connected with a punching upper die holder 13, the punching upper die holder 13 is provided with a plurality of punching cutters 16, and the punching cutters 16 are distributed in a matrix array and correspond to the position distribution of the punching holes 7 on the punching lower die holder 6 one by one.
The punching cutter 16 is provided with a stripper plate 22, the stripper plate 22 is provided with a plurality of through holes for the punching cutter 16 to pass through, the stripper plate 22 is sleeved on the punching cutter 16, and the stripper plate 22 is connected with the punching upper die base 13 through a plurality of springs 23.
The rest of the structure of this example is the same as example 1.
When punching is carried out, the air cylinder 14 drives the punching upper die holder 13 and the punching cutter 16 to move downwards through the piston rod 15, before the punching cutter 16 is butted with the punching hole 7, the stripper plate 22 on the punching upper die holder 13 is firstly contacted with the punching lower die holder 6 and compresses the whole gasket raw material on the punching lower die holder 6, and the punching cutter 16 continues to move downwards and punches the gasket raw material and presses the gasket raw material into the gasket groove 8 to form a plurality of formed gaskets; after punching, in the ascending process of the punching lower die holder 6 and the punching knife 16, the air suction hole 17 in the punching knife 16 firstly sucks the punched and formed gasket to move upwards, the stripper plate 22 continues to compress the punched whole gasket raw material under the action of the spring 23 until the stripper plate 22 is separated from the punching lower die holder 6, and thus the punched and formed gasket is separated from the punched raw material.
The technical principle of the present invention has been described above with reference to specific embodiments, which are merely preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. Other embodiments of the invention will occur to those skilled in the art without the exercise of inventive faculty, and such will fall within the scope of the invention.
Claims (9)
1. The automatic punching equipment for manufacturing the gasket comprises a machine table (1), a punching tray (5), a punching die holder (6), a punching frame (11), a punching upper die holder (13) and a punching knife (16), wherein a bearing base (2) is arranged on the machine table (1), a transverse guide rail (3) is installed on the bearing base (2), and a sliding block (4) is arranged on the transverse guide rail (3), and is characterized in that the sliding block (4) is fixed at the bottom of the punching tray (5), the bottom of the punching tray (5) is connected with a transmission screw (9), the transmission screw (9) is connected with a servo motor (10), the punching die holder (6) is installed on the punching tray (5), and a plurality of punching holes (7) are formed in the punching die holder (6);
a punching frame (11) is installed on a bearing base (2), the top of the punching frame (11) is connected with a positioning support (12), an air cylinder (14) is installed on the positioning support (12), the air cylinder (14) is connected with a piston rod (15), the bottom end of the piston rod (15) is connected with a punching upper die base (13), and a plurality of punching cutters (16) are installed on the punching upper die base (13).
2. Automated punching apparatus for the production of shims according to claim 1, characterized in that the slide (4) is slidingly arranged along a transversal guide (3).
3. The automatic punching equipment for gasket manufacturing according to claim 2, wherein gasket grooves (8) are formed in the punching holes (7), and the punching holes (7) are distributed on the punching lower die holder (6) in a matrix array.
4. The automatic punching equipment for gasket manufacturing according to claim 3, wherein the punching blades (16) are distributed in a matrix array and correspond to the position distribution of the punching holes (7) on the punching lower die holder (6) in a one-to-one manner.
5. The automatic punching equipment for gasket manufacturing according to claim 4, wherein the punching hole (7) is in a circular hole shape, the punching blade (16) is in a cylindrical shape, and the diameter of the punching blade (16) is equal to the aperture of the punching hole (7).
6. The automatic punching equipment for gasket manufacturing according to claim 1, wherein a suction hole (17) is formed in the middle of the punching cutter (16), the suction hole (17) is communicated with a suction pipe (18), the suction pipe (18) is connected with a vacuum pump (19), and a pressure release valve (20) is installed on the vacuum pump (19).
7. The automatic punching equipment for gasket manufacturing according to claim 6, wherein a control box (21) is arranged on the machine table (1), and the control box (21) is respectively connected with the servo motor (10), the air cylinder (14) and the vacuum pump (19).
8. The automatic punching equipment for gasket manufacturing according to any one of claims 1 to 7, wherein the punching blade (16) is provided with a stripper plate (22), the stripper plate (22) is provided with a plurality of through holes for the punching blade (16) to pass through, and the stripper plate (22) is sleeved on the punching blade (16).
9. Automatic punching apparatus for the production of gaskets according to claim 8, characterised in that said stripper (22) and punching upper die holder (13) are connected by means of a plurality of springs (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050970.1A CN110743959A (en) | 2019-10-31 | 2019-10-31 | Automatic punching equipment for gasket manufacturing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911050970.1A CN110743959A (en) | 2019-10-31 | 2019-10-31 | Automatic punching equipment for gasket manufacturing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110743959A true CN110743959A (en) | 2020-02-04 |
Family
ID=69281489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911050970.1A Pending CN110743959A (en) | 2019-10-31 | 2019-10-31 | Automatic punching equipment for gasket manufacturing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110743959A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111438762A (en) * | 2020-04-13 | 2020-07-24 | 威海赛威智能科技有限公司 | Punching and picking composite cutter for filtering membrane |
| CN111469431A (en) * | 2020-04-13 | 2020-07-31 | 威海赛威智能科技有限公司 | Automatic assembling device for filter |
| CN111495072A (en) * | 2020-04-13 | 2020-08-07 | 哈尔滨工业大学（威海） | Automatic assembly method of filter |
| CN111516078A (en) * | 2020-04-21 | 2020-08-11 | 梁剑勇 | Round cutting machine for manufacturing cattail leaf |
| CN113752334A (en) * | 2021-09-09 | 2021-12-07 | 深圳市铭智机电自动化有限公司 | Automatic punching and suction integrated device for rubber sheets |
| CN115319923A (en) * | 2022-08-24 | 2022-11-11 | 蔡玉虹 | Concrete with good damping effect and preparation system and preparation method thereof |
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| CN203542708U (en) * | 2013-10-29 | 2014-04-16 | 苏州美山子制衣有限公司 | Mould cup punching machine |
| CN206154424U (en) * | 2016-10-28 | 2017-05-10 | 第一美卡科技（苏州）有限公司 | Die -cut device of card |
| CN206703164U (en) * | 2017-03-30 | 2017-12-05 | 阙优标 | A kind of rubber punching automation device for discharging |
| CN207086653U (en) * | 2017-05-10 | 2018-03-13 | 天津九为新型材料有限公司 | A kind of aluminum alloy mould plate frame shrouding die cutting die |
| CN208468583U (en) * | 2018-07-24 | 2019-02-05 | 宏丞光电(厦门)有限公司 | A kind of reflector plate die cutting device |
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2019
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203542708U (en) * | 2013-10-29 | 2014-04-16 | 苏州美山子制衣有限公司 | Mould cup punching machine |
| CN206154424U (en) * | 2016-10-28 | 2017-05-10 | 第一美卡科技（苏州）有限公司 | Die -cut device of card |
| CN206703164U (en) * | 2017-03-30 | 2017-12-05 | 阙优标 | A kind of rubber punching automation device for discharging |
| CN207086653U (en) * | 2017-05-10 | 2018-03-13 | 天津九为新型材料有限公司 | A kind of aluminum alloy mould plate frame shrouding die cutting die |
| CN208468583U (en) * | 2018-07-24 | 2019-02-05 | 宏丞光电(厦门)有限公司 | A kind of reflector plate die cutting device |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111438762A (en) * | 2020-04-13 | 2020-07-24 | 威海赛威智能科技有限公司 | Punching and picking composite cutter for filtering membrane |
| CN111469431A (en) * | 2020-04-13 | 2020-07-31 | 威海赛威智能科技有限公司 | Automatic assembling device for filter |
| CN111495072A (en) * | 2020-04-13 | 2020-08-07 | 哈尔滨工业大学（威海） | Automatic assembly method of filter |
| CN111438762B (en) * | 2020-04-13 | 2021-07-20 | 威海赛威智能科技有限公司 | Punching and picking composite cutter for filtering membrane |
| CN111469431B (en) * | 2020-04-13 | 2022-02-22 | 威海赛威智能科技有限公司 | Automatic assembling device for filter |
| CN111516078A (en) * | 2020-04-21 | 2020-08-11 | 梁剑勇 | Round cutting machine for manufacturing cattail leaf |
| CN111516078B (en) * | 2020-04-21 | 2021-12-10 | 梁剑勇 | Round cutting machine for manufacturing cattail leaf |
| CN113752334A (en) * | 2021-09-09 | 2021-12-07 | 深圳市铭智机电自动化有限公司 | Automatic punching and suction integrated device for rubber sheets |
| CN115319923A (en) * | 2022-08-24 | 2022-11-11 | 蔡玉虹 | Concrete with good damping effect and preparation system and preparation method thereof |
| CN115319923B (en) * | 2022-08-24 | 2024-01-26 | 南京同功混凝土工程有限公司 | Concrete with good damping effect and preparation system and preparation method thereof |
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Application publication date: 20200204 |