CN108127052B - High-yield double-acting composite die cup punching machine and cup punching process thereof - Google Patents
High-yield double-acting composite die cup punching machine and cup punching process thereof Download PDFInfo
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- CN108127052B CN108127052B CN201810025328.7A CN201810025328A CN108127052B CN 108127052 B CN108127052 B CN 108127052B CN 201810025328 A CN201810025328 A CN 201810025328A CN 108127052 B CN108127052 B CN 108127052B
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- 238000004080 punching Methods 0.000 title claims abstract description 66
- 239000002131 composite material Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 18
- 230000008569 process Effects 0.000 title claims description 14
- 230000009471 action Effects 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims description 60
- 239000000463 material Substances 0.000 claims description 29
- 239000007769 metal material Substances 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims 2
- 239000002994 raw material Substances 0.000 abstract description 13
- 229910052782 aluminium Inorganic materials 0.000 description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 235000013361 beverage Nutrition 0.000 description 2
- 230000002860 competitive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002699 waste material Substances 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
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/28—Deep-drawing of cylindrical articles using consecutive 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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a high-yield double-acting composite die cup punching machine, which comprises a frame, a driving mechanism and a double-acting composite die assembly, and is characterized in that: the double-acting composite die assembly comprises a lower die, an upper die and a punch rod which are sequentially arranged on the lower die, the middle die and the upper die, the lower die and the upper die can move up and down under the driving action of a driving mechanism, the driving mechanism is provided with a cam and a main shaft, and the upper die and the lower die move cooperatively through designing the movement relation of a cam curve and an eccentric main shaft, so that the double-acting composite die assembly can be stretched twice on one cup punching machine, and therefore larger diameter and thinner metal raw materials can be used.
Description
Technical Field
The invention relates to the technical field of pop can production, in particular to a high-yield double-acting composite die cup punching machine and a cup punching process thereof.
Background
The pop-top can is widely applied to the packaging of various beverages and has the advantages of convenient use and attractive appearance. The demands for pop cans are continuously increasing while the living standard of people is continuously improved and the variety of beverage products is more and more abundant. The pop-top can is generally divided into aluminum and iron, and the basic structure of the pop-top can consists of a can body and a pop-top cover, wherein the can body is mainly manufactured through processes of cup punching, stretching and the like.
The traditional pop can factory needs to improve the competitiveness and the quantity of aluminum product made cans per ton, and basically, the aim is to realize the aim in two aspects:
The number of the dies of the cup punching machine is increased, for example, the number of the dies is increased from 10 dies to 12 dies, the number of the dies is increased to enable the width of the cup punching aluminum material to be increased, the utilization rate of the aluminum material is also increased, the number of output cups of aluminum material per ton can be increased, the output per ton can be increased by about 0.18% -0.3%, if one pop can factory uses aluminum material with the thickness of 0.27mm, the opening diameter of 156mm, the cup punching machine with 10 dies can produce 500 milliliters of pop cans by about 63232 per ton, for example, the output per ton is about 63400 per ton by using a 12-die cup punching machine, the output is increased by 0.265%, the output per ton can be increased, but the effect is not obvious, meanwhile, the width of the aluminum material cannot be infinitely increased, and the width of the aluminum material is basically limited nowadays;
Secondly, a thinner metal material is adopted, the method is the most important method, and the direction that each tank factory in China needs to take effort to improve the competitiveness of the enterprise is also the direction that if the aluminum material is thinned by 0.005 mm, the ton yield of the tank can be increased by about 1.7% -2.5%, and the data show that the ton yield of the tank factory can be rapidly improved by thinning the thickness of the aluminum coil of the punching cup on the premise of meeting the basic requirement of the tank, so that the competitiveness of the enterprise of the tank factory is greatly enhanced.
However, at present, the current industry of manufacturing cans at home and abroad is used for manufacturing the assembly line of thin-wall metal cans (such as pop cans), and the process of manufacturing cans generally adopts a process method that a cup punching machine is used for stretching once, another equipment stretching machine is used for stretching once, and then thinning stretching is carried out. Because the two-time stretching coefficient of the sheet metal material is limited, the size of the cut material is not easy to be oversized, the most advanced can manufacturing enterprises at home and abroad at present adopt the thinnest aluminum material of 0.265mm, and the material cost of a single pop can is limited. In the existing equipment at present, most manufacturers aim to reduce the thickness of the metal base plate, so that the cost for producing the metal can is reduced, and the effect of change is not obvious on the basis that the existing cup punching machine only performs one-time stretch forming. Along with the year-by-year growth of the market size of the pop-top can and the increasingly vigorous market competition, pop-top can manufacturers face more challenges in using thinner aluminum materials and large-scale production, so that development of competitive pop-top can and cup-making domestic equipment capable of efficiently, stably and high-yield is needed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a high-yield double-acting composite die cup punching machine for producing and manufacturing a thin-wall iron can or an aluminum can, which can finish blanking and twice stretching procedures on the cup punching machine, thereby greatly increasing the size of a material to be opened and reducing the thickness of a metal plate, and further reducing the production cost of the metal can.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
The high-yield double-acting composite die cup punching machine comprises a frame, a driving mechanism and a double-acting composite die assembly, wherein the frame comprises a bottom plate and side plates arranged on the left side and the right side of the bottom plate, an upper sliding frame and a lower sliding frame which can move up and down are arranged between the side plates on the two sides, an upper die plate is arranged at the bottom of the upper sliding frame, a lower die plate is arranged at the top of the lower sliding frame, the upper die plate and the lower die plate are respectively arranged at the upper part and the lower part of the frame, a middle die plate is arranged at the middle part of the frame, and the middle die plate is arranged between the upper die plate and the lower die plate and between the middle die plate and the lower die plate;
The driving mechanism comprises a driving motor, a main shaft, flywheels, cams, connecting rods, main bearings and roller bearings, wherein the main shaft is arranged on side plates on two sides of a frame through the main bearings on two ends, the flywheels are arranged in the middle of the main shaft, the flywheels are connected with the driving motor through belts, the cams are respectively arranged at the left end and the right end of the main shaft, the cams are mutually symmetrical and are positioned on the inner sides of the frame, the roller bearings are arranged above the cams, the roller bearings are symmetrically arranged at the bottom of a lower sliding frame and are always in contact with the corresponding cams, eccentric sections are respectively arranged at the left end and the right outer end of the main shaft extending out of the side plates of the frame, the eccentric sections of the main shaft are connected with the bottom ends of the connecting rods through bearings, and the top ends of the connecting rods are connected with the two ends of an upper sliding frame through bearings;
The double-acting composite die assembly comprises a lower die, an upper die and a punch rod which are sequentially arranged on a lower die plate, a middle die plate and an upper die plate, wherein the lower die comprises an inner stretching ring, a lower pressing piece I, a lower punching cutter and a lower pressing piece II, wherein the inner stretching ring, the lower pressing piece I, the lower punching cutter and the lower pressing piece II are sequentially arranged from inside to outside, the lower pressing piece I, the lower punching cutter and the lower pressing piece II are capable of moving up to down, and the middle part of the inner stretching ring is provided with a hollow cup outlet channel;
the middle die is fixed on the middle die plate through a middle die seat and comprises an upper pressing piece, an outer punch, a pressing ring and an upper punching cutter which are sequentially arranged from inside to outside and can move up and down, a driving piece for driving the pressing ring to move up and down is arranged at the top of the pressing ring, and a punching rod channel which is communicated and matched with a punching rod is arranged in the middle of the upper pressing piece;
The punch rod arranged at the bottom of the upper die plate stretches into the punch rod channel, and the bottom of the punch rod is provided with a punch head which is matched with the inner cavity of the pop can cup body.
The upper pressing piece, the lower pressing piece II and the upper pressing piece are all arranged as pistons, and are correspondingly a lower piston I, a lower piston II and an upper piston I.
The driving piece adopts a three-stage piston type driving structure, namely a primary piston, a secondary piston and a tertiary piston which are sequentially arranged from top to bottom.
The top of well mould is provided with the gland, the gland middle part sets up to link up with punch stem matched with punch stem passageway.
The cup punching process is used in combination with a stepping feeding mechanism in the prior art, and comprises the following steps:
(1) The lower template is positioned at the lowest position, and the upper template is positioned at the highest position;
(2) The metal material plate advances to a certain extent under the action of the feeding mechanism
(3) The lower die plate rises under the action of the cam, so that the lower piston II presses the metal plate on the lower surface of the upper punching cutter, and the air pressure at the lower part of the lower piston II provides the pressing force during blanking and shearing;
(4) The lower die plate continues to ascend, the lower piston II presses the metal plate fixedly, the outer cutting edge of the lower punching cutter is meshed with the inner cutting edge of the upper punching cutter, and the metal plate is sheared and cut off;
(5) The lower punching cutter continuously ascends along with the lower die plate, and the material pressing ring provides the required material pressing force during the first stretching under the pushing of the driving piece;
(6) The lower punch knife continuously ascends along with the lower die plate, and the inner hole of the lower punch knife stretches the sheet material for the first time under the interaction of the outer circle of the outer punch fixed on the middle die plate;
(7) After the first stretching is finished, the lower die plate stays at the highest point by means of the far point flat angle curve of the cam under the support of the cam, and meanwhile, the upper die plate moves downwards under the drive of the connecting rod, and the punch descends along the punch rod channel along with the punch rod;
(8) The lower piston I compresses the metal material plate which is stretched at the first stage on the lower surface of the outer punch, the lower surface of the upper piston I also compresses the metal material plate on the upper surface of the inner stretching ring, and the lower piston I and the upper piston I provide the material pressing force during the second-stage stretching;
(9) The punch continues to descend along with the upper die plate, and the cup body is stretched for the second stage under the combined action of the outer circular surface of the punch and the inner hole of the inner stretching ring;
(10) The punch descends to the lowest point to finish the second-stage stretching action, and the cup body is completely molded;
(11) High-pressure air is injected into the cup body through the punch rod, so that the cup body falls off from the punch;
(12) The cup body after falling leaves the cup punching machine through a cup outlet channel in the lower template;
(13) The lower template descends to the lowest point under the action of the cam, and the upper template ascends to the highest point under the action of the upper carriage, so that one working cycle is completed.
The beneficial effects of the invention are as follows:
(1) According to the invention, through the optimal design of the structure of the cup punching machine, the two-time stretching of the metal raw material on one cup punching machine is realized, so that the raw material can use larger diameter and thinner raw material, the raw material can be used more fully, the number of metal raw material can be effectively increased per ton, the number of ton cups is about 1.15 times of that of the cup punching machine with the same specification in the prior art, the production cost is effectively reduced by increasing the utilization rate of the raw material, and the competitive strength of enterprises is improved.
(2) The cup punching machine provided by the invention can realize integrated cup punching operation of material cutting, twice stretching and blanking, and has the advantages of novel process mode, high production efficiency, regular punched cup shape, less material consumption and good quality.
Drawings
Figure 1 is a front view of the present invention,
Figure 2 is a side view of the present invention,
Figure 3 is a schematic cross-sectional view of a double-acting composite mold assembly of the present invention,
The device comprises a lower sliding frame 1, a lower die plate 2, an upper middle die plate 3, an upper die plate 4, an upper sliding frame 5, a connecting rod 6, a side plate 7, a roller bearing 8, a cam 9, a main shaft 10, a base 11, a flywheel 12, an inner stretching ring 21, a lower pressing piece I22, a lower pressing piece 23, a lower pressing piece II 24, a metal plate 25, an upper pressing piece 26, a pressing ring 27, an outer pressing piece 28, an upper pressing piece 29, a first-stage piston 31, a middle die holder 32, a pressing cover 33, a pressing rod 34, a pressing head 35, a second-stage piston 36 and a third-stage piston 37.
Detailed Description
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
As shown in fig. 1 to 3: the high-yield double-acting composite die cup punching machine comprises a frame, a driving mechanism and a double-acting composite die assembly, wherein the frame comprises a bottom plate and side plates 7 arranged on the left side and the right side of the bottom plate, an upper sliding frame 5 and a lower sliding frame 1 which can move up and down are arranged between the side plates 7 on the two sides, an upper die plate 4 is arranged at the bottom of the upper sliding frame 5, a lower die plate 2 is arranged at the top of the lower sliding frame 1, the upper die plate 4 and the lower die plate 2 are respectively arranged at the upper part and the lower part of the frame, a middle die plate 3 is arranged in the middle of the frame, and the middle die plate 3 is arranged between the upper die plate 4 and the lower die plate 2;
The driving mechanism comprises a driving motor, a main shaft 10, a flywheel 12, cams 9, a connecting rod 6, a main shaft 10 bearing and a roller bearing 8, wherein the main shaft 10 is arranged on side plates 7 at two sides of a frame through the main shaft 10 bearings at two ends, the flywheel 12 is arranged in the middle of the main shaft 10, the flywheel 12 is connected with the driving motor through a belt, the cams 9 are respectively arranged at the left end and the right end of the main shaft 10, the cams 9 are mutually symmetrical and are positioned at the inner side of the frame, the roller bearing 8 is arranged above the cams 9, the roller bearings 8 are symmetrically arranged at the bottom of the lower carriage 1 and always contact with the corresponding cams 9, eccentric sections are respectively arranged at the left end and the right end of the main shaft 10 extending out of the side plates 7 of the frame, the eccentric sections of the main shaft 10 are connected with the bottom end of the connecting rod 6 through bearings, and the top end of the connecting rod 6 is connected with the two ends of the upper carriage 5 through bearings;
The double-acting composite die assembly comprises a lower die, an upper die and a punch rod 34 which are sequentially arranged on a lower die plate 2, a middle die plate 3 and an upper die plate 4, wherein the lower die comprises an inner stretching ring 21, a lower pressing piece I22 capable of moving up and down, a lower punching cutter 23 and a lower pressing piece II 24 capable of moving up and down, which are sequentially arranged from inside to outside, and the middle part of the inner stretching ring 21 is provided with a hollow cup outlet channel;
The middle die is fixed on the middle die plate 3 through a middle die holder 32 and comprises an upper pressing piece 29, an outer punch 28, a pressing ring 27 and an upper punch 26 which are sequentially arranged from inside to outside and can move up and down, a driving piece for driving the pressing ring 27 to move up and down is arranged at the top of the pressing ring 27, and a punch 34 channel which is communicated and matched with a punch 34 is arranged at the middle part of the upper pressing piece 29;
The punch rod 34 arranged at the bottom of the upper die plate 4 extends into the channel of the punch rod 34, and the bottom of the punch rod 34 is provided with a punch head 35 which is matched with the inner cavity of the pop can cup body.
The lower pressing piece I22, the lower pressing piece II 24 and the upper pressing piece 29 are all provided with pistons, and are correspondingly provided with a lower piston I, a lower piston II and an upper piston I.
The driving part adopts a three-stage piston 37 type driving structure, namely a first-stage piston 31, a second-stage piston 36 and a third-stage piston 37 which are sequentially arranged from top to bottom.
The top of well mould is provided with gland 33, gland 33 middle part sets up to link up the punch rod 34 passageway that cooperates with punch rod 34.
The invention is matched with a stepping feeding mechanism in the prior art for use together, realizes an efficient, reliable and integrated cup punching process for carrying out material opening, twice stretching and blanking on the same cup punching machine, and comprises the following steps:
(1) The lower template 2 is positioned at the lowest position, and the upper template 4 is positioned at the highest position;
(2) The metal material plate advances to a certain extent under the action of the feeding mechanism
(3) The lower die plate 2 rises under the action of the cam 9, so that the lower piston II presses the metal plate 25 on the lower surface of the upper punching cutter 26, and the air pressure at the lower part of the lower piston II provides the pressing force during blanking and shearing;
(4) The lower die plate 2 continues to ascend, the lower piston II presses the metal plate 25 to be motionless, the outer edge opening of the lower punch 23 is meshed with the inner edge of the upper punch 26, and the sheet material is sheared from the metal plate 25;
(5) The lower punch 23 continues to ascend along with the lower die plate 2, and the pressing ring 27 provides the pressing force required by the first stretching under the pushing of the driving piece;
(6) The lower punch 23 continues to ascend along with the lower die plate 2, and the inner hole of the lower punch 23 stretches the sheet material for the first time under the interaction of the outer circle of the outer punch 28 fixed on the middle die plate 3;
(7) After the first stretching is finished, the lower die plate 2 is supported by the cam 9, the smooth curved surface on one side of the cam 9 away from the circle center stays at the highest point, meanwhile, the upper die plate 4 moves downwards under the drive of the connecting rod 6, and the punch 35 moves downwards along the punch 34 channel along with the punch 34;
(8) The lower piston I presses the metal material plate which is subjected to the first-stage stretching on the lower surface of the outer punch 28, the lower surface of the upper piston I also presses the metal material plate on the upper surface of the inner stretching ring 21, and the lower piston I and the upper piston I provide the pressing force during the second-stage stretching;
(9) The punch 35 continues to descend along with the upper die plate 4, and the cup body is stretched for the second stage under the combined action of the outer circular surface of the punch 35 and the inner hole of the inner stretching ring 21;
(10) The punch 35 descends to the lowest point to complete the second-stage stretching action, and the cup body is completely molded;
(11) High-pressure air is injected into the cup body through the punch rod 34, so that the cup body falls off from the punch head 35;
(12) The cup body after falling leaves the cup punching machine through a cup outlet channel in the lower template 2;
(13) The lower die plate 2 descends to the lowest point under the action of the cam 9, and the upper die plate 4 ascends to the highest point under the action of the upper carriage 5, so that one working cycle is completed.
The driving principle of the twice stretching punching cup is as follows: the driving motor drives the flywheel 12 to rotate through a belt, the rotation of the flywheel 12 drives the main shaft 10 to rotate, the left and right cams 9 arranged at the two ends of the main shaft 10 rotate along with the main shaft, and as the cams 9 are of non-circular structures, the roller bearings 8 which are arranged above the cams 9 and always contacted with the cams 9 can move up and down along with the rotation of the cams 9, and finally the lower carriage 1 moves up and down along with the U-shaped grooves in the middle of the left and right side plates 7, and the lower template 2 arranged on the lower carriage 1 moves up and down along with the lower carriage 1;
Meanwhile, in the process of rotating the main shaft 10, the eccentric sections arranged at the two outer ends of the main shaft 10 do circular motion along the axis of the main shaft 10, crank motion is performed around the main shaft 10 with the connecting rod 6 under the rotating action of the eccentric sections of the main shaft 10, the upper sliding frame 5 moves up and down along the U-shaped groove between the left side plate 7 and the right side plate 7 under the driving action of the connecting rod 6, and the lower template 2 arranged on the lower sliding frame 1 moves up and down along with the lower sliding frame 1;
According to the invention, through designing the motion relation between the curve of the cam 9 and the eccentric main shaft 10, the upper die plate 2 and the lower die plate 2 cooperatively move, so that the integrated cup punching action of opening, twice stretching and blanking of one cup punching machine can be realized.
The cup making process of the cup punching machine is a process of shearing and stretching, and according to the principle of a stretching die, each stretching has the problem of limitation of a stretching ratio, namely, a round material with a certain diameter can only be stretched to a round barrel with a certain diameter, and if the round barrel with a smaller diameter is stretched, the round material can be stretched by two or more times. The traditional cup punching machine equipment only completes the cup punching process through one-time stretching, the equipment already calculates the stretching ratio to be close to the limit size, that is to say, under the condition that the diameter of the finished can body is fixed, the material opening diameter is basically calculated to be maximum, and the material opening diameter cannot be greatly increased due to the limitation of the stretching ratio coefficient.
The invention overcomes the technical difficulty, and realizes twice stretching of the metal raw material on one cup punching machine, so that the raw material can use larger diameter and thinner raw material, the raw material is used more fully, the number of metal raw material can be effectively increased, the ton cup production quantity is about 1.15 times of that of the cup punching machine with the same specification in the prior art, the production cost is effectively reduced by increasing the utilization rate of the raw material and reducing the output of waste materials, and meanwhile, the production efficiency is effectively improved and the competitiveness of enterprises is greatly improved by realizing the integrated cup punching operation of cutting, twice stretching and blanking on one cup punching machine.
The foregoing embodiments and description have been provided merely to illustrate the principles and best modes of carrying out the invention, and various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. The utility model provides a high-yield double-acting compound die cup punching machine, includes frame, actuating mechanism and double-acting compound die subassembly, its characterized in that: the machine frame comprises a bottom plate and side plates arranged on the left side and the right side of the bottom plate, an upper sliding frame and a lower sliding frame which can move up and down are arranged between the side plates on the two sides, an upper template is arranged at the bottom of the upper sliding frame, a lower template is arranged at the top of the lower sliding frame, the upper template and the lower template are respectively arranged at the upper part and the lower part of the machine frame, a middle template is arranged in the middle of the machine frame, and the middle template is arranged between the upper template and the lower template;
The driving mechanism comprises a driving motor, a main shaft, flywheels, cams, connecting rods, main bearings and roller bearings, wherein the main shaft is arranged on side plates on two sides of a frame through the main bearings on two ends, the flywheels are arranged in the middle of the main shaft, the flywheels are connected with the driving motor through belts, the cams are respectively arranged at the left end and the right end of the main shaft, the cams are mutually symmetrical and are positioned on the inner sides of the frame, the roller bearings are arranged above the cams, the roller bearings are symmetrically arranged at the bottom of a lower sliding frame and are always in contact with the corresponding cams, eccentric sections are respectively arranged at the left end and the right outer end of the main shaft extending out of the side plates of the frame, the eccentric sections of the main shaft are connected with the bottom ends of the connecting rods through bearings, and the top ends of the connecting rods are connected with the two ends of an upper sliding frame through bearings;
The double-acting composite die assembly comprises a lower die, an upper die and a punch rod which are sequentially arranged on a lower die plate, a middle die plate and an upper die plate, wherein the lower die comprises an inner stretching ring, a lower pressing piece I, a lower punching cutter and a lower pressing piece II, wherein the inner stretching ring, the lower pressing piece I, the lower punching cutter and the lower pressing piece II are sequentially arranged from inside to outside, the lower pressing piece I, the lower punching cutter and the lower pressing piece II are capable of moving up to down, and the middle part of the inner stretching ring is provided with a hollow cup outlet channel;
the middle die is fixed on the middle die plate through a middle die seat and comprises an upper pressing piece, an outer punch, a pressing ring and an upper punching cutter which are sequentially arranged from inside to outside and can move up and down, a driving piece for driving the pressing ring to move up and down is arranged at the top of the pressing ring, and a punching rod channel which is communicated and matched with a punching rod is arranged in the middle of the upper pressing piece;
The punch rod arranged at the bottom of the upper die plate stretches into the punch rod channel, and the bottom of the punch rod is provided with a punch head which is matched with the inner cavity of the pop can cup body.
2. The high-yield double-acting composite die cup stamping machine as claimed in claim 1, wherein: the lower pressing piece I, the lower pressing piece II and the upper pressing piece are all arranged to be pistons, and the lower pistons I, the lower pistons II and the upper pistons I are correspondingly arranged.
3. The high-yield double-acting composite die cup stamping machine as claimed in claim 1, wherein: the driving piece adopts a three-stage piston type driving structure, namely a primary piston, a secondary piston and a tertiary piston which are sequentially arranged from top to bottom.
4. The high-yield double-acting composite die cup stamping machine as claimed in claim 1, wherein: the top of well mould is provided with the gland, the gland middle part sets up to link up with punch stem matched with punch stem passageway.
5. The cup punching process of the high-yield double-acting composite die cup punching machine according to claim 1, comprising the following steps:
(1) The lower template is positioned at the lowest position, and the upper template is positioned at the highest position;
(2) The metal material plate advances for a certain distance under the action of the feeding mechanism;
(3) The lower die plate rises under the action of the cam, so that the lower piston II presses the metal plate on the lower surface of the upper punching cutter, and the air pressure at the lower part of the lower piston II provides the pressing force during blanking and shearing;
(4) The lower die plate continues to ascend, the lower piston II presses the metal plate fixedly, the outer cutting edge of the lower punching cutter is meshed with the inner cutting edge of the upper punching cutter, and the metal plate is sheared and cut off;
(5) The lower punching cutter continuously ascends along with the lower die plate, and the material pressing ring provides the required material pressing force during the first stretching under the pushing of the driving piece;
(6) The lower punch knife continuously ascends along with the lower die plate, and the inner hole of the lower punch knife stretches the sheet material for the first time under the interaction of the outer circle of the outer punch fixed on the middle die plate;
(7) After the first stretching is finished, the lower die plate stays at the highest point by means of the far point flat angle curve of the cam under the support of the cam, and meanwhile, the upper die plate moves downwards under the drive of the connecting rod, and the punch descends along the punch rod channel along with the punch rod;
(8) The lower piston I compresses the metal material plate which is stretched at the first stage on the lower surface of the outer punch, the lower surface of the upper piston I also compresses the metal material plate on the upper surface of the inner stretching ring, and the lower piston I and the upper piston I provide the material pressing force during the second-stage stretching;
(9) The punch continues to descend along with the upper die plate, and the cup body is stretched for the second stage under the combined action of the outer circular surface of the punch and the inner hole of the inner stretching ring;
(10) The punch descends to the lowest point to finish the second-stage stretching action, and the cup body is completely molded;
(11) High-pressure air is injected into the cup body through the punch rod, so that the cup body falls off from the punch;
(12) The cup body after falling leaves the cup punching machine through a cup outlet channel in the lower template;
(13) The lower template descends to the lowest point under the action of the cam, and the upper template ascends to the highest point under the action of the upper carriage, so that one working cycle is completed.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109047509B (en) * | 2018-09-28 | 2023-10-31 | 浙江龙文精密设备有限公司 | Bowl-shaped tank and forming die thereof |
| CN110405055A (en) * | 2019-06-18 | 2019-11-05 | 李可 | Cylindrical battery steel shell automatic stamping production line |
| CN113103490B (en) * | 2021-04-12 | 2024-03-19 | 佛山市定中机械有限公司 | Plastic injection molding machine |
| CN113600681A (en) * | 2021-08-30 | 2021-11-05 | 东莞市威士曼新能源科技有限公司 | Three-slide block double-action full-automatic cup punching machine |
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