CN109551784B - Flexible sheet paving machine for bulletproof helmet - Google Patents
Flexible sheet paving machine for bulletproof helmet Download PDFInfo
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- CN109551784B CN109551784B CN201811635591.4A CN201811635591A CN109551784B CN 109551784 B CN109551784 B CN 109551784B CN 201811635591 A CN201811635591 A CN 201811635591A CN 109551784 B CN109551784 B CN 109551784B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a flexible sheet paving machine of a bulletproof helmet, which comprises a frame body, a device for accurately picking up large sheets, a device for taking and delivering the large sheets, a device for taking and delivering small sheets, an upper die and a lower die; the upper die and the lower die are arranged on the upper die, the upper die rotates along with the lower die and the holding device, and the hot hydraulic system is connected with the upper die; the upper die and the lower die are provided with an upper die and lower die closing safety locking device; the large material sheet taking and feeding device is provided with a folding cloth device and a folding sequence arranging device at the folding cloth position of the large material sheet; the whole working process of the invention is controlled by a PLC, and the invention automatically operates, each layer of material sheet can keep completely consistent with the internal shape of the concave die cavity of the paving sheet of the lower die after hot hydraulic flexible tabletting, the material layers are tightly bonded, no fold and no bubble exist, the pre-pressing procedure of the bulletproof helmet can be omitted, the production efficiency is improved, the product quality is ensured, and the invention is suitable for popularization and application of equipment and tools enterprises.
Description
Technical Field
The invention relates to a flexible sheet paving machine for a bulletproof helmet, and belongs to the technical field of production and processing machinery for tool bulletproof products.
Background
When the automatic sheet paving machine is used for paving sheets, the upper die is a metal die with fixed size, so that the sheets can only be partially adhered to each other when hot pressing is carried out after the sheets are paved, the bonding between the sheets is not tight and tight, gaps are reserved, air bubbles and folds are easy to generate, the whole anti-performance and strength are reduced after finished products are manufactured, and in order to avoid the generation of the air bubbles and folds, the pressing process is carried out for multiple times, and the time and the labor are wasted, so that the working efficiency is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bulletproof helmet flexible sheet paving machine which adopts a concave die cavity to pave sheets, utilizes rubber bags of an upper die to sequentially expand in a closed concave die cavity after the rubber bags of the upper die are heated and pressurized, and gradually bonds the paved sheets from the center part of the sheets to the edge area in a whole area.
The invention adopts the following technical scheme:
the invention comprises a frame body, a device for accurately picking up large sheets, a device for taking and delivering small sheets, an upper die and a lower die; the frame comprises a frame body, an upper frame arranged at the top of the frame body and a middle frame arranged in the frame body, wherein an operation platform is arranged on the middle frame; the upper frame is provided with a linear slide rail, an upper die driving cylinder is arranged on the linear slide rail through a slide block, the cylinder end of the upper die driving cylinder is arranged on a cross beam of the upper frame, the bottom of the slide block is provided with an upper die lifting cylinder, the upper die is arranged at the piston rod end of the upper die lifting cylinder, and the lower die is arranged on an operation platform; the upper die and the lower die are arranged on the upper die, and the upper die rotates along with the lower die and is provided with a holding device and a thermal hydraulic system connected with the upper die; the upper die and the lower die are provided with an upper die and lower die closing safety locking device; a first feeding sheet linear slide rail and a second feeding sheet linear slide rail which are parallel are arranged between the upper frame and the middle frame, the large feeding sheet taking and feeding device and the small feeding sheet taking and feeding device are correspondingly arranged between the first feeding sheet linear slide rail and the second feeding sheet linear slide rail, the precise large-material-sheet taking device is arranged between the first material-sheet taking linear slide rail and the second material-sheet taking linear slide rail and corresponds to the large-material-sheet taking and conveying device; the large material sheet taking and conveying device is provided with a folding cloth device and a folding sequence arranging device at the folding cloth position of the large material sheet.
The invention has the following positive effects: the invention adopts vacuum to sequentially suck the large and small tablets through the sucking discs of the large tablet taking and delivering device and the small tablet taking and delivering device, thereby being stable and reliable; because the large material sheets are provided with the shearing openings, loose fibers on the edges of the shearing openings are easy to be entangled with each other, and the device for accurately picking up the large material sheets ensures that only one large material sheet can be taken away at a time; the folding cloth-gathering device ensures that each large material sheet can be accurately gathered into a fixed shape through a stay wire when moving to the position right above the lower die, the folding cloth-gathering device is accurate and reliable, the folding sequence of the overlapping parts of the large material sheets on the folding cloth ensures that the upper and lower position relations of the folded material sheets on two adjacent sides of each cut are consistent, the friction resistance of an overlapping area is reduced, the overlapping of the cut material sheets is faster, and the accuracy is high; the upper die rubber capsule is made of temperature-resistant and oil-resistant rubber, the thickness of the rubber capsule is gradually thickened from the bottom of the cone to the top of the opening, when hot hydraulic oil enters the rubber capsule, the cone head presses the central part of a material sheet placed in a concave die cavity of a laying sheet, the central part of the material sheet is gradually expanded upwards and outwards, and the rest parts of the material sheet are gradually pressed, so that the flexible sticking and pressing can enable the material sheet to be fully and naturally deformed to prevent wrinkles, and air between the material sheets can be extruded upwards from below to prevent bubbles from being formed between the material sheets; after the outer wall of the rubber bag is fully contacted with the material sheets, the rubber bag is continuously pressurized, so that the colloid on the newly paved material sheets is melted and fully adhered with the material sheets paved last time, the shape of the rubber bag is consistent with the shape of the inner surface of the concave die cavity of the paving sheet, the deviation between the material sheets and the concave die cavity of the paving sheet during molding and pressing is reduced, the sliding dislocation deformation between the material sheets is reduced, and the improvement of the performance index of the bulletproof helmet is facilitated.
The invention relates to a die assembly safety locking device for an upper die and a lower die, which is used for ensuring that a rubber bag of the upper die can normally work when being pressurized; the upper die and lower die guiding and correcting device can restore the original precision between the upper die and the lower die when the die is assembled and rotated, so that the phenomenon that the upper die is not assembled and the upper die is not locked is avoided; the upper die rotates along with the lower die and the holding device ensures that accurate die assembly can be realized; the hot hydraulic system can provide temperature-adjustable and pressure-adjustable hydraulic oil for the rubber bag of the upper die, and the process of oiling, pressurizing and maintaining the rubber bag and absorbing oil is completed by utilizing a hydraulic joint; the quality and the precision of the paving sheet can be ensured.
The whole working process of the invention is controlled by a PLC, and the invention automatically operates, each layer of material sheet can keep completely consistent with the internal shape of the concave die cavity of the paving sheet of the lower die after hot hydraulic flexible tabletting, the material layers are tightly bonded, no fold and no bubble exist, the pre-pressing procedure of the bulletproof helmet can be omitted, the production efficiency is improved, the product quality is ensured, and the invention is suitable for popularization and application of equipment and tools enterprises.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the assembly structure of the upper and lower dies of the present invention;
FIG. 3 is a schematic diagram of the upper and lower mold closing guide deviation correcting device and the upper mold rotating and holding device along with the lower mold;
FIG. 4 is a schematic diagram of the thermal hydraulic system of the upper die of the present invention;
FIG. 5 is a schematic diagram showing the assembly structure of the large sheet feeding device, the folding cloth device and the folding sequence arranging device at the folding cloth position of the large sheet;
FIG. 6 is a schematic view of a small tablet handling device according to the present invention;
FIG. 7 is a schematic structural view of a sequential folding device for folding a large material sheet to a folding cloth;
FIG. 8 is a schematic diagram of the upper die structure of the present invention;
FIG. 9 is a schematic diagram of the assembly structure of the upper mold part of the present invention;
FIG. 10 is a schematic view of the lower die structure of the present invention;
FIG. 11 is a schematic diagram of the assembly structure of the lower die part of the invention;
FIG. 12 is a schematic diagram of the upper and lower mold clamping guide deviation rectifying device of the present invention;
FIG. 13 is a schematic diagram of a 90 degree bend plate structure for guiding and correcting deviation according to the present invention;
FIG. 14 is a schematic diagram of the assembly structure of the parts of the upper and lower mold clamping guide deviation rectifying device of the invention;
FIG. 15 is a schematic structural view of the upper and lower mold closing safety locking device of the present invention;
FIG. 16 is a schematic view of the assembly structure of the parts of the lower die clamping safety locking device of the invention;
FIG. 17 is a schematic view showing the structure of the upper die and the lower die rotating and holding device according to the present invention;
FIG. 18 is a schematic view showing the assembly structure of the parts of the holding device of the present invention, wherein the upper die rotates with the lower die;
FIG. 19 is a schematic view of a brake band assembly according to the present invention.
Detailed Description
As shown in fig. 1-7 and 15, the invention comprises a frame body, a large tablet device 4, a large tablet device 5, a small tablet device 6, an upper die 8 and a lower die 17; the frame comprises a frame body 1, an upper frame 101 arranged at the top of the frame body 1 and a middle frame 102 arranged in the frame body 1, wherein an operation platform 20 is arranged on the middle frame 102; the upper frame 101 is provided with a linear slide rail 21, an upper die driving cylinder 5-11 is arranged on the linear slide rail 21 through a slide block 5-9, the cylinder end of the upper die driving cylinder 5-11 is arranged on a cross beam of the upper frame 101, an upper die lifting cylinder 7 is arranged at the bottom of the slide block 5-9, the upper die 8 is arranged at the piston rod end of the upper die lifting cylinder 7, and the lower die 17 is arranged on an operation platform 20; an upper die and lower die closing guide deviation correcting device 22, an upper die rotating and holding device 24 along with the lower die and a thermal hydraulic system 25 connected with the upper die 8 are arranged on the upper die 8; the upper die 8 and the lower die 17 are provided with an upper die and lower die closing safety locking device 23; the first feeding sheet taking linear slide rail 2 and the second feeding sheet taking linear slide rail 3 which are parallel are arranged between the upper frame 101 and the middle frame 102, the large feeding sheet taking device 5 and the small feeding sheet taking device 6 are correspondingly arranged between the first feeding sheet taking linear slide rail 2 and the second feeding sheet taking linear slide rail 3, and the precise large feeding sheet taking device 4 is arranged between the first feeding sheet taking linear slide rail 2 and the second feeding sheet taking linear slide rail 3 and corresponds to the large feeding sheet taking device 5; the large material sheet taking and feeding device 5 is provided with a folding cloth device 9 and a folding sequence arranging device 10 at the folding cloth position of the large material sheet.
As shown in fig. 8 and 9, the upper die 8 of the invention comprises an upper die circular cover plate 8-1, a guide sleeve mounting plate 8-8, a brake disc 8-6, a guide rod 8-9 and a rubber bag 8-3, wherein the rubber bag 8-3 is a bag body with an opening on the top wall; the lower end of the upper die lifting cylinder 7 is provided with the guide sleeve mounting plates 8-8, two sides of the guide sleeve mounting plates 8-8 are provided with the guide sleeves 8-7, the number of the guide sleeves 8-7 is two, the guide rods 8-9 penetrate through the guide sleeves 8-7 and are fastened on the brake disc 8-6 through the first locknuts 8-10, the middle part of the top surface of the upper die circular cover plate 8-1 is fixedly provided with the connecting seat 8-4, and a piston rod of the upper die lifting cylinder 7 penetrates through the brake disc 8-6 and is fastened on the connecting seat 8-4 through the lifting cylinder piston rod locknuts 8-5; a rubber bag compression ring 8-2 is arranged on the inner side of the round top of the rubber bag 8-3; the round cover plate 8-1, the round top of the rubber capsule 8-3 and the rubber capsule compression ring 8-2 are fixedly arranged through a first bolt 8-11; a hydraulic sealing ring 8-13 is arranged between the first bolt 8-11 and the round cover plate 8-1; a hydraulic joint 8-12 communicated with the inner cavity of the rubber bag 8-3 is arranged through the round cover plate 8-1, the round top of the rubber bag 8-3 and the rubber bag compression ring 8-2; the rubber capsule 8-3 expands into a cone shape after being filled with oil and pressurized; the brake disc 8-6 is provided with a circular arc-shaped through groove 8-14, and the top of the hydraulic joint 8-12 is positioned in the circular arc-shaped through groove 8-14; the model of the upper die lifting cylinder 7 is as follows: pull rod type standard cylinder SC50×500S.
As shown in fig. 10 and 11, the lower die 17 of the invention comprises a square lower die body 17-1, a rotating shaft 17-3, a lower die toothed belt wheel 17-6, a stepping motor 18, a stepping motor toothed belt wheel 19 and a synchronous belt 17-14; the lower die body 17-1 is arranged on the operation platform 20, a sheet laying concave cavity 17-2 is arranged in the middle of the lower die body 17-1, the inner cavity of the concave cavity 17-2 is matched with the shape of a finished bulletproof helmet, the rotating shaft 17-3 is fixedly arranged in the middle of the bottom surface of the lower die body 17-1 through a third bolt 17-10, a pressure bead disc 17-4 and a ball bearing 17-5 are correspondingly arranged on the rotating shaft 17-3, a lower die toothed belt wheel 17-6 is fixedly arranged at the lower end of the rotating shaft 17-3 through a short key 17-7, and a pressing plate 17-8 is arranged at the bottom of the rotating shaft 17-3 through a second bolt 17-9; preventing the lower die toothed belt pulley 17-6 from falling off; the stepping motor 18 is arranged on one side of the lower die body 17-1 on the operating platform 20, the stepping motor toothed belt wheel 19 is arranged on a transmission shaft of the stepping motor 18, the synchronous belt 17-14 is arranged on the lower die toothed belt wheel 17-6 and the stepping motor toothed belt wheel 19, and the mounting heights of the lower die toothed belt wheel 17-6 and the stepping motor toothed belt wheel 19 are the same; the heating rods 17-11 are uniformly arranged on the corresponding sides of the lower die body 17-1, the heating rods 17-11 are electrified to keep the basic temperature of the lower die body 17-1, the air-pressure air joint 17-12 is arranged on one side of the lower die body 17-1, the bonded helmet can be ejected out of the concave cavity 17-2 through ventilation of the air-pressure air joint 17-12, the temperature control probe 17-13 is arranged on the front side of the lower die body 17-1, the temperature control probe 17-13 controls on-off of the heating rods 17-11, the heating rods 17-11 are powered off when the temperature is high, and the heating rods 17-11 are powered on when the temperature is low.
As shown in fig. 12, 13 and 14, the upper and lower die closing guide deviation rectifying device 22 of the invention comprises guide deviation rectifying 90 ︒ bent plates 22-1 arranged on two corresponding sides of an upper die circular cover plate 8-1; the guide deviation correcting 90 ︒ bent plate 22-1 and the upper die circular cover plate 8-1 are fixed through a fourth bolt 22-2; the 1/3 plane 22-3 on the inner side of the vertical plate of the bent plate 22-1 of the guide deviation rectifying 90 ︒ is vertical to the flat plate inner plane 22-6 of the bent plate 22-1 of the guide deviation rectifying 90 ︒, and the 2/3 plane 22-4 on the inner side of the vertical plate forms an included angle of 15 ︒ with the outer plane 22-5 of the vertical plate of the bent plate 22-1 of the guide deviation rectifying 90 ︒; when in installation, the distance between 1/3 planes 22-3 on the inner sides of the vertical plates of the corresponding two guide deviation rectifying 90 ︒ bent plates 22-1 is equal to the distance between two sides of the corresponding lower die body 17-1.
As shown in fig. 15 and 16, the upper and lower mold closing safety locking device 23 of the present invention comprises a locking cylinder 23-1, an upper mold locking vertical plate 23-9, a lower mold locking vertical plate 23-5 and a locking taper mandrel 23-10; the big end of the locking taper mandrel 23-10 is fixed with a piston rod of the locking cylinder 23-1; the upper die locking vertical plates 23-9 are symmetrically fixed on two sides of the top surface of the upper die circular cover plate 8-1; an upper die locking taper hole 23-8 is formed in the upper die locking vertical plate 23-9, the lower die locking vertical plate 23-5 is symmetrically and fixedly arranged on two sides of the top of the lower die body 17-1 through mounting bolts 23-6, a lower die locking straight hole 23-7 is formed in the upper portion of the lower die locking vertical plate 23-5, an air cylinder mounting bracket 23-2 is mounted on the top of the lower die locking vertical plate 23-5 through an air cylinder mounting bracket screw 23-3, a locking air cylinder 23-1 is fixed on the outer side of the air cylinder mounting bracket 23-2 through an air cylinder fastening screw 23-4, and a locking taper mandrel 23-10 is positioned in the corresponding lower die locking straight hole 23-7 and is not exposed; the upper die locking vertical plate 23-9 corresponds to the lower die locking vertical plate 23-5; the taper and the direction of the locking taper hole 23-8 of the upper die are consistent with those of the corresponding locking taper mandrel 23-10; after the upper die and the lower die are matched, the locking taper hole 23-8 of the upper die and the central line of the locking taper mandrel 23-10 are coaxial and have the same height; the locking cylinder 23-1 is of a compact cylinder ACE40×30SB.
As shown in fig. 17, 18 and 19, the upper die of the invention rotates with the lower die and the holding device 24 comprises a brake cylinder 24-1, a brake hoop and a brake shoe 24-4; the brake hoop comprises a semi-annular brake hoop active section 24-2 and a brake hoop passive section 24-6, and the rear ends of the brake hoop active section 24-2 and the brake hoop passive section 24-6 are hinged through a pin shaft 24-3; the connecting seat 8-4 is positioned between the brake hoop active section 24-2 and the brake hoop passive section 24-6; the brake cylinder 24-1 is fixedly arranged on the top surface of the brake disc 8-6 through a brake cylinder fixing bolt 24-8; the piston rod of the brake cylinder 24-1 is connected with the front end of the car hoop driving section 24-2 through a second locknut 24-7, and the front end of the brake hoop driven section 24-6 is fixed with the top surface of the brake disc 8-6 through a pin shaft screw 24-5; the brake shoe 24-4 is fixed on the surface of the brake hoop and sleeved on the connecting seat 8-4.
As shown in figure 4, the upper die hot hydraulic system comprises a hydraulic oil tank 25-1, an oil tank heater 25-2, a temperature measuring probe 25-3, an oil inlet pipe 25-4, a one-way valve 25-5, a hydraulic gear pump 25-6, a pressure gauge 25-7, an oil inlet electromagnetic valve 25-8, an oil return electromagnetic valve 25-9, a pressure regulating overflow valve 25-10, an overflow pipe 25-11, an oil filling exhaust port 25-12, an oil tank cover 25-13, an oil return pipe 25-14 and an oil inlet pipe 25-15; one end of the oil inlet pipe 25-4 is communicated with an oil inlet of the hydraulic gear pump 25-6, the other end of the oil inlet pipe 25-4 penetrates through a hydraulic oil tank cover 25-13 of the hydraulic oil tank 25-1 and is inserted under the liquid level of hydraulic oil, an oil outlet of the hydraulic gear pump 25-6 is communicated with the oil inlet pipe 25-15 and the oil return pipe 25-14, and the oil inlet pipe 25-15 and the oil return pipe 25-14 are connected with the hydraulic joint 8-12; one end of the overflow pipe 25-11 is connected with an oil outlet of the hydraulic gear pump 25-6, the other end of the overflow pipe 25-11 is inserted into the hydraulic oil tank 25-1, and a one-way valve 25-5 and a pressure regulating overflow valve 25-10 are arranged in the middle of the overflow pipe 25-11; an oil inlet electromagnetic valve 25-8 is arranged on the oil inlet pipe 25-15, and an oil return electromagnetic valve 25-9 is arranged on the oil return pipe 25-14; the pressure gauge 25-7 is arranged on the inlet end pipeline of the oil inlet electromagnetic valve 25-8; the oil inlet electromagnetic valve 25-8 is of the type: 2KL250-25 of pilot normally open type; the oil return electromagnetic valve 25-9 has the following model: and a pilot normally closed type 2L250-25.
The invention adopts vacuum to sequentially suck the large and small tablets through the suckers of the large tablet taking and delivering device 5 and the small tablet taking and delivering device 6, thereby being stable and reliable; the large material sheets are provided with the shearing openings, loose fibers on the edges of the shearing openings are easy to be entangled with each other, and the device 4 for precisely picking up the large material sheets ensures that only one large material sheet can be taken away at a time; the folding cloth-gathering device 9 ensures that each large material sheet can be accurately gathered into a fixed shape through a stay wire when moving to the position right above the lower die 17, the folding sequence of the overlapping position of the folding cloth of the large material sheets is consistent along the arranging device 10, the upper and lower position relationship of the folded material sheets at the two adjacent sides of each cut is ensured, the friction resistance of the overlapping area is reduced, the overlapping of the cut material sheets is faster, and the accuracy is high; the rubber capsule 8-3 of the upper die is made of temperature-resistant and oil-resistant rubber, the thickness of the rubber capsule is gradually thickened from the bottom of the cone to the top of the opening, when hot hydraulic oil enters the rubber capsule 8-3, the cone head presses the central part of a material sheet placed in a concave die cavity of a laying sheet, then the rubber capsule gradually expands upwards and outwards, the rest parts of the material sheet are gradually pressed, and the flexible sticking and pressing can enable the material sheet to be fully and naturally deformed to prevent wrinkles, and can also enable air between the material sheets to be extruded upwards from below to prevent bubbles from being formed between the material sheets; after the outer wall of the rubber capsule 8-3 is fully contacted with the tablet, the pressurizing is continued, so that the colloid on the newly paved tablet is melted and fully adhered with the tablet paved last time, the appearance is consistent with the shape of the inner surface of the concave die cavity 17-2 of the tablet, the deviation between the tablet and the concave die cavity 17-2 of the tablet during molding and pressing is reduced, the sliding dislocation deformation between the tablets is reduced, and the improvement of the performance index of the bulletproof helmet is facilitated.
The upper and lower mold closing safety locking device 23 of the invention is used for ensuring normal operation when the rubber capsule 8-3 of the upper mold is pressurized, and because the piston diameter of the upper mold lifting cylinder 7 is only 50 mm, the air pressure is 0.6 megaPa during operation, so that the downward pressure acting on the upper circular cover plate 8-1 of the upper mold during mold closing pressurization is about 118 kg, the hot hydraulic oil pressure in the rubber capsule 8-3 is 0.5-0.6 megaPa during mold closing pressurization, the diameter of the opening end of the rubber capsule 8-3 is about 270 mm, and the upward thrust of the hot hydraulic oil acting on the lower surface of the upper circular cover plate 8-1 of the upper mold is about 2860-3430 kg. The upper pressure and the lower pressure of the upper die circular cover plate 8-1 are greatly different, so that the concave die cavity 17-2 of the paving sheet cannot be kept in a closed state when the die is closed and pressurized, and the rubber capsule 8-3 cannot be ensured to apply enough pressure to the material sheet, and even the rubber capsule 8-3 bursts. After the upper and lower die closing safety locking device is added, when the pressure of hot hydraulic oil in the rubber bag rises to 1.0 megaPa during die closing and pressurizing, the concave die cavity of the laying sheet can be kept in a closed state, and the upper and lower die closing safety locking device works normally and does not influence normal die opening and die closing.
The upper and lower die guiding and correcting device 22 of the invention aims at solving the problems that the lifting stroke of the upper die is longer in ascending and descending, the fixed end of the guide rod 8-9 is nearest to the guide sleeve 8-7 when the upper die and the lower die are opened, and the fit clearance between the guide rod 8-9 and the guide sleeve 8-7 has no influence on the position accuracy of the upper die. The fixed end of the guide rod 8-9 is far away from the guide sleeve 8-7 when the upper die and the lower die are closed, and at the moment, the influence of the fit clearance between the guide rod 8-9 and the guide sleeve 8-7 on the position accuracy of the upper die 8 can be amplified in multiple; secondly, a hydraulic metal hose is connected with a hydraulic joint 8-12 which is arranged on the round top of the rubber capsule 8-3 and communicated with the inner cavity of the rubber capsule, the hydraulic joint 8-12 and the rubber capsule are fixedly connected through screw threads, the hydraulic metal hose has the weakest influence on the upper die 8 only when being installed, and once the upper die 8 rotates, the hydraulic metal hose has a certain traction effect on the upper die 8, so that the upper die 8 deflects; the most critical is that when the upper die and the lower die are assembled and rotated, the piston rod of the upper die lifting cylinder 7 rotates along with the piston rod in the longest extending state, a reverse torque is applied to the piston rod of the thinner lifting cylinder by the sealing ring on the piston rod at the other end of the piston rod of the upper die lifting cylinder 7 due to friction resistance, so that the piston rod is in an elastic torsion state, the elastic torque accumulated by the piston rod is released when the upper die 8 ascends after the upper die and the lower die are opened, the original precision between the upper die and the lower die is damaged when the upper die slightly reversely rotates to rotate, the relative positions of the upper die and the lower die are changed when the upper die descends to be assembled again, the locking taper mandrel cannot enter the locking taper hole of the upper die, and the upper die and lower die assembling safety locking device is invalid. The lower 2/3 plane 22-4 of the inner side of the vertical plate of the guide deviation correcting 90-degree bent plate 22-1 forms an included angle of 15 degrees with the outer plane 22-5 of the vertical plate of the guide deviation correcting 90-degree bent plate 22-1; the distance between the two corresponding sharp angles is larger than the distance between the two corresponding sides of the lower die body 17-1, in the process of inserting the sharp angle ends of the guide deviation correcting 90-degree bent plates 22-1 and the upper side lines of the two sides of the lower die body 17-1, the angle of slight reverse rotation of the upper die 8 caused by various factors is gradually restored by utilizing the dimensional change from large to small between the two corresponding guide deviation correcting inclined planes, and when the 1/3 plane 22-3 on the inner side of the vertical plate of the corresponding two guide deviation correcting 90-degree bent plates 22-1 is contacted with the two sides of the lower die body 17-1, the original precision between the upper die and the lower die can be restored due to the fact that the distance between the 1/3 plane 22-3 on the inner side of the vertical plate of the corresponding two guide deviation correcting 90-degree bent plates 22-1 is equal to the distance between the two sides of the corresponding lower die body 17-1, so that the original precision between the upper die and the lower die can be avoided from being closed and locked.
According to the invention, when a brake mechanism, namely a brake cylinder piston rod 24-1, in the upper die follow-up lower die rotating and holding device 24 is retracted from an extension position, a brake hoop driving section 24-2 and a brake hoop driven section 24-6 hinged with the brake hoop driving section 24-2 are driven, a pin roll 24-3 fixed at the rear end of the brake hoop driven section 24-6 is used as an axis to rotate, the brake hoop driving section 24-2 and the brake hoop driven section 24-6 drive a brake shoe 24-4, a gap is formed between the brake shoe 24-4 and the connection seat by opening in a clamping connection seat state, then a piston rod of a locking cylinder 24-1 extends to drive a locking taper mandrel 23-10 to extend into an upper die locking taper hole 23-8 on an upper die locking vertical plate 23-9 from the lower die locking taper mandrel 23-7, at the moment, the upper die 8 can be driven to rotate by a stepping motor 18, and the lower die 8 can be synchronously rotated by an angle with the lower die 17, and then when the brake mechanism is closed, namely the brake cylinder 24-1 is extended from the retraction position, the brake cylinder piston rod 24-4 and the brake hoop driving section 24-2 and the brake hoop driving section 24-4 are driven to rotate by the extension position, and the upper die is simultaneously kept at a new angle by the upper die 8, and the upper die is kept to be accurately matched with the upper die and the upper die 4, and the upper die is kept in a new die-sealing angle, and the upper die is kept by the new die sealing angle, and the upper die is kept by the upper die and the upper die is in a new die sealing angle, and the sealing device, and the upper die is kept, and is in a new die sealing angle, and has a new sealing angle, and has a sealing angle, and is kept in a sealing angle, and is in a sealing device. The brake mechanism is opened again until the next time the upper die 8 is required to rotate at the same angle as the lower die 17.
The hot hydraulic system 25 can provide temperature-adjustable and pressure-adjustable hydraulic oil for the rubber bag of the upper die, and finish the processes of oiling, pressurizing and maintaining the rubber bag and absorbing oil by utilizing a hydraulic joint; especially when the oil absorption process is finished, most of oil in the rubber bag is pumped away, so that the rubber bag is contracted and shrunken to be small, the paved material sheets can not be touched when the rubber bag is closed with the lower die 17 next time, the material sheets are prevented from shifting, and the quality and the precision of paving the material sheets can be ensured.
The following description of the working process of the invention will take as an example a web laying-out in connection with actual operation:
as shown in figures 1-19, before the invention works, a power supply and an air source are firstly connected, whether all air cylinders are in situ or not is checked, a vacuum pump runs normally or not, whether the oil temperature of hydraulic oil reaches a preset value or not is checked, a starting switch is pressed down after error is avoided, an automatic sheet paving machine of the bulletproof helmet finishes sheet taking, sheet feeding and cloth folding once, the sheet is placed into a sheet paving concave cavity 17-2 in the center of a lower die body 17-1, then a sheet taking mechanism returns to the original position, an upper die driving air cylinder 5-11 drives an upper die 8 to run from the original position to the position right above the lower die 17, an upper die lifting air cylinder 7 descends, and the upper die 8 gradually approaches to the lower die 17; the upper and lower die closing guide deviation correcting device assists the upper die 8 and the lower die 17 to accurately close, the upper and lower die closing safety locking device starts to work, the locking taper mandrel 23-10 is sent into the upper die locking taper hole 23-8 by the front of the piston rod of the locking cylinder 23-1, the locking taper mandrel is tightly bolted and kept, the hydraulic gear pump 25-6 starts to rotate positively at the moment, the oil inlet electromagnetic valve 25-8 is opened, the oil return electromagnetic valve 25-9 is closed, hydraulic oil with a certain temperature is injected into the rubber capsule 8-3 through the hydraulic joint 8-12, the rubber capsule 8-3 begins to expand from a shrunken beam shape in the concave die cavity 17-2 of the paving piece, firstly the conical head contacts the center part of the material piece which is sent to the position and is tightly pressed, and then the rubber capsule 8-3 continues to expand, the rest material sheets are pressed and deformed in sequence along the concave cavity from bottom to top in a full ring shape, the material sheets are tightly adhered to the inner surface of the concave cavity, air between material sheet layers is gradually extruded while avoiding generating wrinkles, the hydraulic gear pump 25-6 is continuously supplied with oil, when the pressure in the rubber capsule 8-3 rises to reach a preset value, the pressure regulating overflow valve 25-10 is opened to discharge oil, the pressure maintaining time is entered at the moment, the oil inlet electromagnetic valve 25-8 is closed, the hydraulic gear pump 25-6 stops rotating, after the pressure maintaining time is finished, the hydraulic gear pump 25-6 is reversed, the oil return electromagnetic valve 25-9 is opened, the oil inlet electromagnetic valve 25-8 is closed, hydraulic oil in the rubber capsule 8-3 flows back into the hydraulic oil tank 25-1 through the oil return electromagnetic valve 25-9 and the oil return pipe 25-14 until the hydraulic oil in the rubber capsule 8-3 is basically pumped completely to be in a shrunken shape, the hydraulic gear pump 25-6 stops rotating, the brake cylinder 24-1 is retracted from an original position, the brake mechanism is opened, at the moment, the lower die toothed belt wheel 17-6 drives the upper die and the lower die in a locking state to rotate a preset angle through the stepping motor 18, the stepping motor toothed belt wheel 19 and the synchronous belt 17-14, joints of the next spreading sheet are staggered, after the stepping motor 18 stops, a piston rod of the brake cylinder 24-1 is moved forward, the upper die is locked and held by a connecting seat 8-4 of a piston rod of the lifting cylinder along with the lower die through a brake shoe 24-4 by a rotating and holding device, then the piston rod of the locking cylinder 23-1 is retracted, the locking taper mandrel 23-10 is retracted from the locking taper hole 23-8 of the upper die into the locking straight hole 23-7, then the lifting cylinder 7 of the upper die is lifted to the original position, and the piston rod of the upper die driving cylinder 5-11 is retracted. One web laying process is ended and ready for the next work cycle.
The whole working process of the invention is controlled by a PLC, and the invention runs automatically, and each layer of material sheet can keep completely consistent with the internal shape of the lower die of the female die after hot hydraulic flexible tabletting. The material layers are tightly adhered, have no wrinkles and no bubbles, can omit the pre-pressing procedure of the bulletproof helmet, improve the production efficiency, ensure the product quality and are suitable for popularization and application of equipment enterprises.
Finally, it should be understood that the foregoing description is merely illustrative of the preferred embodiments of the present invention, and that no limitations are intended to the scope of the invention, except insofar as modifications, equivalents or improvements may be made within the spirit and principles of the invention.
Claims (1)
1. The flexible sheet paving machine for the bulletproof helmet is characterized by comprising a frame body, a device (4) for accurately picking up large sheets, a device (5) for taking and delivering the large sheets, a device (6) for taking and delivering the small sheets, an upper die (8) and a lower die (17);
the frame body comprises a frame body (1), an upper frame (101) arranged at the top of the frame body (1) and a middle frame (102) arranged in the frame body (1), wherein an operation platform (20) is arranged on the middle frame (102);
a linear slide rail (21) is arranged on the upper frame (101), an upper die driving cylinder (5-11) is arranged on the linear slide rail (21) through a sliding block (5-9), the cylinder end of the upper die driving cylinder (5-11) is arranged on a cross beam of the upper frame (101), an upper die lifting cylinder (7) is arranged at the bottom of the sliding block (5-9), the upper die (8) is arranged at the piston rod end of the upper die lifting cylinder (7), and the lower die (17) is arranged on an operation platform (20); an upper die and lower die closing guide deviation correcting device (22), an upper die rotating and holding device (24) along with the lower die and a hot hydraulic system (25) connected with the upper die (8) are arranged on the upper die (8); an upper die and lower die closing safety locking device (23) is arranged on the upper die (8) and the lower die (17);
a first feeding sheet taking linear slide rail (2) and a second feeding sheet taking linear slide rail (3) which are parallel are arranged between the upper frame (101) and the middle frame (102), a large feeding sheet taking device (5) and a small feeding sheet taking device (6) are correspondingly arranged between the first feeding sheet taking linear slide rail (2) and the second feeding sheet taking linear slide rail (3), and a large feeding sheet taking device (4) is accurately arranged between the first feeding sheet taking linear slide rail (2) and the second feeding sheet taking linear slide rail (3) and corresponds to the large feeding sheet taking device (5); a folding cloth gathering device (9) and a folding sequence arranging device (10) at the folding cloth position of the large material sheet are arranged on the large material sheet taking and conveying device (5);
the upper and lower die closing guide deviation correcting device (22) comprises guide deviation correcting 90 ︒ bent plates (22-1) which are arranged on two corresponding sides of the upper die circular cover plate (8-1); the guide deviation correcting 90 ︒ bent plate (22-1) and the upper die circular cover plate (8-1) are fixed through a fourth bolt (22-2); the upper 1/3 plane (22-3) on the inner side of the vertical plate of the guide deviation rectifying 90 ︒ bent plate (22-1) is vertical to the flat plate inner plane (22-6) of the guide deviation rectifying 90 ︒ bent plate (22-1), and the lower 2/3 plane (22-4) on the inner side of the vertical plate forms an included angle of 15 ︒ with the outer plane (22-5) of the vertical plate of the guide deviation rectifying 90 ︒ bent plate (22-1);
the upper die rotates along with the lower die, and the holding device (24) comprises a brake cylinder (24-1), a brake hoop and a brake shoe (24-4); the brake hoop comprises a semi-annular brake hoop driving section (24-2) and a brake hoop driven section (24-6), and the rear ends of the brake hoop driving section (24-2) and the brake hoop driven section (24-6) are hinged through a pin shaft (24-3); the connecting seat (8-4) is positioned between the brake hoop active section (24-2) and the brake hoop passive section (24-6); the brake cylinder (24-1) is fixedly arranged on the top surface of the brake disc (8-6) through a brake cylinder fixing bolt (24-8), a piston rod of the brake cylinder (24-1) is connected with the front end of the driving section (24-2) of the car hoop through a second locknut (24-7), the front end of the driven section (24-6) of the brake hoop is fixed on the top surface of the brake disc (8-6) through a pin shaft screw (24-5), and the brake shoe (24-4) is fixed on the surface of the brake hoop and sleeved on the connecting seat (8-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635591.4A CN109551784B (en) | 2018-12-29 | 2018-12-29 | Flexible sheet paving machine for bulletproof helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811635591.4A CN109551784B (en) | 2018-12-29 | 2018-12-29 | Flexible sheet paving machine for bulletproof helmet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109551784A CN109551784A (en) | 2019-04-02 |
| CN109551784B true CN109551784B (en) | 2023-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811635591.4A Active CN109551784B (en) | 2018-12-29 | 2018-12-29 | Flexible sheet paving machine for bulletproof helmet |
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| CN (1) | CN109551784B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007283722A (en) * | 2006-04-20 | 2007-11-01 | Meiki Co Ltd | Deflection-correcting mechanism of heating cylinder |
| CN104097335A (en) * | 2014-06-18 | 2014-10-15 | 际华三五零二职业装有限公司 | Sheet taking/feeding and arranging device of automatic sheet paver of bulletproof helmet |
| CN104097336A (en) * | 2014-06-18 | 2014-10-15 | 际华三五零二职业装有限公司 | Precise and automatic sheet paver of bulletproof helmet |
| CN209534215U (en) * | 2018-12-29 | 2019-10-25 | 际华三五零二职业装有限公司 | A kind of bulletproof halmet flexibility tile machine |
-
2018
- 2018-12-29 CN CN201811635591.4A patent/CN109551784B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007283722A (en) * | 2006-04-20 | 2007-11-01 | Meiki Co Ltd | Deflection-correcting mechanism of heating cylinder |
| CN104097335A (en) * | 2014-06-18 | 2014-10-15 | 际华三五零二职业装有限公司 | Sheet taking/feeding and arranging device of automatic sheet paver of bulletproof helmet |
| CN104097336A (en) * | 2014-06-18 | 2014-10-15 | 际华三五零二职业装有限公司 | Precise and automatic sheet paver of bulletproof helmet |
| CN209534215U (en) * | 2018-12-29 | 2019-10-25 | 际华三五零二职业装有限公司 | A kind of bulletproof halmet flexibility tile machine |
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|---|---|
| CN109551784A (en) | 2019-04-02 |
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