CN114082806A

CN114082806A - Prepressing device of precision hardware pressing die and using method thereof

Info

Publication number: CN114082806A
Application number: CN202111395515.2A
Authority: CN
Inventors: 赖火明; 郑海权; 张济文
Original assignee: Shenzhen Huafu Hardware Products Co ltd
Current assignee: Shenzhen Huafu Hardware Products Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-02-25

Abstract

The invention discloses a prepressing device of a precise hardware pressing die, wherein a sliding support is transversely and fixedly arranged in the middle of a rack, a conveying mechanism is arranged on the sliding support, a driving motor is fixedly arranged on the outer side of the sliding support, a first sliding groove is formed in the inner side of the sliding support, two driving wheels are rotatably connected to the inner wall of the first sliding groove, the two driving wheels are in transmission connection through a conveying belt, a processing platform is fixedly connected with the conveying belt, a lifting mechanism is fixedly arranged in a working cavity, a lower die is fixedly connected with the lifting mechanism, a preheating mechanism, a prepressing mechanism and a polishing mechanism are sequentially and fixedly arranged in the rack, an upper die is fixedly connected with the prepressing mechanism, and a main control box is fixedly arranged at the bottom of the rack. According to the invention, the hardware is heated to a high-temperature state by using the preheating mechanism and softened, and then when the hardware is pressed into the lower die, the interference part can deform under the extrusion action, so that the damage to the die forming part or the hardware is avoided, the processing precision of the product is improved, and the product quality is ensured.

Description

Prepressing device of precise hardware pressing die and using method thereof

Technical Field

The invention relates to the field of dies, in particular to a prepressing device of a precision hardware pressing die and a using method thereof.

Background

When the hardware is produced, because there is size deviation in the hardware of different batch production, the shape size is mainly big enough to lead to many indisputable, the position size is inaccurate to lead to the characteristic off normal, and then mould shaping part produces with hardware cooperation position and interferes when leading to the mould compound die, and the crush injury hardware perhaps wipes out the powder with the hardware, influences the machining precision, causes the product quality to reduce.

Disclosure of Invention

The technical problem to be solved by the invention is that the hardware is crushed when being assembled due to the size deviation of the hardware, and the processing precision is influenced. In order to overcome the defects of the prior art, the invention provides a pre-pressing device of a precise hardware pressing die and a using method thereof.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a prepressing device of a precise hardware pressing die, which comprises a rack, a sliding support, a conveying mechanism, a lifting mechanism, a lower die, a preheating mechanism, a prepressing mechanism, a polishing mechanism, an upper die and a master control box, wherein the sliding support is transversely and fixedly arranged in the middle of the rack, the conveying mechanism is arranged on the sliding support and comprises a driving motor, driving wheels, a conveying belt and a processing platform, the driving motor is fixedly arranged on the outer side of the sliding support, a first sliding groove is formed in the inner side of the sliding support, the two driving wheels are rotatably connected to the inner wall of the first sliding groove, the power output end of the driving motor is connected with one of the driving wheels, the two driving wheels are in transmission connection through the conveying belt, the processing platform is slidably connected into the first sliding groove and is fixedly connected with the conveying belt, a working cavity is formed in the processing platform, a first through hole communicated with the working cavity is formed in the top of the processing platform, elevating system sets firmly in the work intracavity, and the lower mould sets up in the processing platform top, and lower mould and elevating system fixed connection, has set firmly preheating machine structure, prepressing mechanism and grinding machanism in the frame in proper order, goes up mould and prepressing mechanism fixed connection, and total control box sets firmly in the frame bottom, and driving motor, preheating machine structure, prepressing mechanism and grinding machanism all with total control box electric connection.

In a preferred technical scheme of the invention, the lifting mechanism comprises a lifting assembly and a limiting assembly, the lifting assembly comprises a first sliding block, a telescopic hollow air bag, a first rack, a first rotating gear, a second rotating gear, a first rotating shaft, a heat absorbing sheet, a heat conducting wire and a heat conducting rod, one end of the first sliding block is fixedly arranged at the bottom of the lower die, the other end of the first sliding block is connected in the first through hole in a sliding manner, a control cavity and a rotating cavity are communicated above the working cavity, the telescopic hollow air bag is fixedly arranged in the control cavity, the first rack is connected in the control cavity in a sliding manner, the top of the first rack is fixedly connected with the telescopic hollow air bag, the first rotating gear is rotatably connected in the control cavity, the second rotating gear is rotatably connected in the rotating cavity and is meshed with the first sliding block, the first rotating gear is fixedly connected with the second rotating gear through the first rotating shaft, the slide bar chamber has still been seted up to control chamber one side, and the one end of heat conduction pole sets firmly in lower mould one side, and the other end of heat conduction pole is pegged graft in the slide bar intracavity, and the heat sink inlays in slide bar chamber lateral wall, and the heat sink is connected with flexible hollow gasbag through heat conduction silk.

In a preferred technical scheme of the invention, the limiting component comprises a rotating block, a second rotating shaft, a torsion spring, a push plate, a sleeve, a first compression spring, a first connecting rod, a first air cylinder, a conical block and a second compression spring, wherein the rotating block is rotatably connected with the side wall of the working cavity through the second rotating shaft, the torsion spring is sleeved on the second rotating shaft, the rotating block is fixedly connected with the side wall of the working cavity through the torsion spring, an accommodating groove is formed in the center of the side surface of the rotating block, the push plate is slidably connected in the control cavity, one end of the sleeve is rotatably connected with the push plate, the other end of the sleeve is inserted in the accommodating groove, the sleeve is fixedly connected with the bottom wall of the accommodating groove through the first compression spring, the first air cylinder is arranged in the working cavity, the first air cylinder is fixedly connected with the sleeve through the first connecting rod, one end of the conical block is inserted in the first air cylinder, and the conical block is fixedly connected with the bottom wall of the first air cylinder through the second compression spring, the side surface of the first sliding block is provided with a positioning groove matched with the conical block, and the top of the working cavity and the side surface of the rotating block are both provided with clamping grooves.

In a preferred technical scheme of the invention, the preheating mechanism comprises a preheating box, a heating coil and a heat insulation plate, the preheating box is fixedly arranged on the rack, a preheating cavity is formed in the preheating box, an annular cavity is circumferentially formed on the outer side of the preheating cavity, the heating coil is fixedly arranged in the annular cavity, the heat insulation plate is circumferentially fixedly arranged on the outer side wall of the annular cavity, and a second through hole communicated with the preheating cavity is further formed in the bottom of the preheating box.

In a preferred technical scheme of the invention, the prepressing mechanism comprises a supporting plate, a lifting motor, a third rotating gear, a second rack and a pressing plate, the supporting plate is transversely and fixedly arranged above the sliding support, the lifting motor is fixedly arranged on the supporting plate, the third rotating gear is fixedly arranged at the power output end of the lifting motor, a third through hole is formed in the supporting plate, the second rack is slidably connected into the third through hole, one end of the second rack is fixedly connected with the pressing plate, the other end of the second rack is meshed with the third rotating gear, and the upper die is detachably arranged at the bottom of the pressing plate.

In a preferred technical scheme of the invention, the polishing mechanism comprises a base, an annular guide rail, a polishing seat, a walking motor, a first bevel gear, a second bevel gear, a third rotating shaft, rollers, a first support rod, a cross beam, an electric telescopic rod, a second slider, a polishing motor and a polishing wheel, wherein the base is fixedly arranged at the bottom of the frame, the annular guide rail is fixedly arranged on the base, the polishing seat is connected on the annular guide rail in a sliding manner, a driving groove is formed in the bottom of the polishing seat, the walking motor is embedded in the top of the driving groove, the first bevel gear is fixedly arranged at the power output end of the walking motor, the second bevel gear is arranged in the driving groove and is meshed with the first bevel gear, two rollers are arranged in the driving groove, the two rollers are rotatably connected into the driving groove through the third rotating shaft, the second bevel gear is fixedly arranged on the third rotating shaft, the cross beam is fixed at the top of the polishing seat through the first support rod, second slider sliding connection is on the crossbeam, and electric telescopic handle's stiff end is fixed in one side of first branch, and electric telescopic handle's free end and one side fixed connection of second slider, grinding motor inlay in second slider opposite side, and the emery wheel sets firmly in grinding motor's power take off end.

The invention also provides a use method of the prepressing device for the precise hardware press mold, which comprises the following steps:

s1, an operator controls the conveyer belt to work through the master control box, moves the lower die to the leftmost end of the rack, and places hardware on the lower die;

s2, preheating, moving the lower die into a preheating box, and heating the hardware to a high-temperature state by using a heating coil to soften the hardware;

s3, after preheating is finished, the lower die moves to the position right below the prepressing mechanism, the prepressing mechanism drives the upper die to press downwards, hardware is subjected to prepressing treatment, and the shape and the size of the hardware are corrected;

and S4, after the pre-pressing is finished, removing burrs on the surface of the hardware by a grinding mechanism.

The invention has the beneficial effects that:

1. according to the invention, the hardware is heated to a high-temperature state by using the preheating mechanism and softened, and then when the hardware is pressed into the lower die, the interference part can deform under the extrusion action, so that the damage to the die forming part or the hardware is avoided, the processing precision of the product is improved, and the product quality is ensured.

2. According to the invention, the lifting mechanism can control the lower die to stretch into the preheating cavity and seal the preheating cavity, so that heat dissipation is reduced, and energy is saved.

3. According to the invention, by arranging the polishing mechanism, burrs on the surface of the hardware can be removed after pre-pressing is finished, so that the outer surface of the hardware is smooth, and the appearance requirement of a product is met. In addition, before the pre-compaction processing, when the size deviation of the hardware is too big, the grinding mechanism can be manually controlled by an operator to work, redundant iron is ground, and therefore the hardware is prevented from deforming during pre-compaction.

Drawings

FIG. 1 is a schematic structural diagram of a pre-pressing device of a precision hardware press mold according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

FIG. 3 is an enlarged schematic view at B of FIG. 1;

FIG. 4 is a schematic structural diagram of a preheating mechanism in a pre-pressing device of a precision hardware press mold according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a lifting mechanism in a pre-pressing device of a precision hardware press mold according to an embodiment of the present invention;

FIG. 6 is a stepped sectional view taken in the direction of C-C in FIG. 5;

fig. 7 is a schematic structural diagram of a grinding mechanism in a pre-pressing device of a precision hardware press mold according to an embodiment of the present invention.

In the figure:

1. a frame; 2. a sliding support; 21. a first chute; 3. a conveying mechanism; 31. a drive motor; 32. a drive wheel; 33. a conveyor belt; 34. a processing platform; 341. a working chamber; 342. a first through hole; 343. a control chamber; 344. a rotation chamber; 345. a ram cavity; 4. a lifting mechanism; 41. a lifting assembly; 411. a first slider; 412. a telescopic hollow air bag; 413. a first rack; 414. a first rotating gear; 415. a second rotating gear; 416. a first rotating shaft; 417. a heat absorbing sheet; 418. heat conducting wires; 419. a heat conducting rod; 42. a limiting component; 421. rotating the block; 422. a second rotating shaft; 423. a torsion spring; 424. pushing the plate; 425. a sleeve; 426. a first compression spring; 427. a first link; 428. a first cylinder; 429. a conical block; 4210. a second compression spring; 4211. accommodating grooves; 4212. positioning a groove; 4213. a card slot; 5. a lower die; 6. a preheating mechanism; 61. a preheating box; 62. a heating coil; 63. a heat insulation plate; 64. a preheating chamber; 65. an annular cavity; 66. a second through hole; 7. a pre-pressing mechanism; 71. a support plate; 72. a lifting motor; 73. a third rotating gear; 74. a second rack; 75. pressing a plate; 76. a third through hole; 8. a polishing mechanism; 81. a base; 82. an annular guide rail; 83. polishing the base; 84. a traveling motor; 85. a first bevel gear; 86. a second bevel gear; 87. a third rotating shaft; 88. a roller; 89. a first support bar; 810. a cross beam; 811. an electric telescopic rod; 812. a second slider; 813. polishing the motor; 814. grinding a grinding wheel; 815. a drive slot; 9. an upper die; 10. a master control box; 11. hardware.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1-7, the embodiment provides a pre-pressing device for a precision hardware pressing die, which includes a frame 1, a sliding support 2, a conveying mechanism 3, a lifting mechanism 4, a lower die 5, a preheating mechanism 6, a pre-pressing mechanism 7, a polishing mechanism 8, an upper die 9 and a general control box 10, the sliding support 2 is transversely and fixedly arranged at the middle part of the frame 1, the conveying mechanism 3 is arranged on the sliding support 2, the conveying mechanism 3 includes a driving motor 31, driving wheels 32, a conveying belt 33 and a processing platform 34, the driving motor 31 is fixedly arranged at the outer side of the sliding support 2, the inner side of the sliding support 2 is provided with a first sliding chute 21, the two driving wheels 32 are rotatably connected to the inner wall of the first sliding chute 21, the power output end of the driving motor 31 is connected with one of the driving wheels 32, the two driving wheels 32 are in transmission connection through the conveying belt 33, the processing platform 34 is slidably connected in the first sliding chute 21, the processing platform 34 is fixedly connected with the conveying belt 33, a working chamber 341 is formed in the processing platform 34, a first through hole 342 communicated with the working chamber 341 is formed in the top of the processing platform 34, the lifting mechanism 4 is fixedly arranged in the working chamber 341, the lower die 5 is arranged above the processing platform 34, the lower die 5 is fixedly connected with the lifting mechanism 4, the preheating mechanism 6, the prepressing mechanism 7 and the polishing mechanism 8 are sequentially and fixedly arranged in the frame 1, the upper die 9 is fixedly connected with the prepressing mechanism 7, the main control box 10 is fixedly arranged at the bottom of the frame 1, and the driving motor 31, the preheating mechanism 6, the prepressing mechanism 7 and the polishing mechanism 8 are electrically connected with the main control box 10. In this embodiment, the conveying mechanism 3 can control the lower mold 5 to reciprocate left and right on the sliding support 2, the driving motor 31 drives the driving wheel 32 to rotate, and the driving wheel 32 drives the conveying belt 33 to rotate, so that the machining platform 34 can reciprocate left and right along the surface of the sliding support 2; the preheating mechanism 6 is used for processing the hardware 11 to a high-temperature state to soften the hardware, so that the hardware can be conveniently deformed when the upper die 9 and the lower die 5 are closed, and the upper die 9, the lower die 5 or the hardware 11 is prevented from being extruded and injured; the pre-pressing mechanism 7 is used for compressing the hardware 11 before the lower die 5 and the upper die 9 are matched, and further correcting the shape and the size of the hardware 11, so that the size error of a part generated in the casting process is eliminated; because the compound die in-process, 11 sides of hardware receive the extrusion can produce fold or burr, and the burr on surface can be got rid of to grinding machanism 8 for its surface is smooth, satisfies the outward appearance requirement of product. During initial state, lower mould 5 is located to the leftmost end of sliding support 2, operating personnel places hardware 11 to lower mould 5 this moment, in operation, at first, by total control box 10 control conveying mechanism 3 work, drive lower mould 5 and remove right to preheat in the mechanism 6, at this moment, total control box 10 control is preheated 6 works and is heated hardware 11 to the high temperature state with hardware, then conveying mechanism 3 drives lower mould 5 and removes under prepressing mechanism 7, total control box 10 control prepressing mechanism 7 work this moment, carry out the pre-compaction to hardware 11, after the pre-compaction was accomplished, total control box 10 control grinding mechanism 8 starts, and then polish 11 sides of hardware, thereby make its surface smooth.

Specifically, the lifting mechanism 4 includes a lifting component 41 and a limiting component 42, the lifting component 41 includes a first slider 411, a telescopic hollow air bag 412, a first rack 413, a first rotating gear 414, a second rotating gear 415, a first rotating shaft 416, a heat absorbing plate 417, a heat conducting wire 418 and a heat conducting rod 419, one end of the first slider 411 is fixedly disposed at the bottom of the lower mold 5, the other end of the first slider 411 is slidably connected to the first through hole 342, a control cavity 343 and a rotating cavity 344 are disposed at one side of the working cavity 341, the first through hole 342 is communicated with the control cavity 343 through the rotating cavity 344, the telescopic hollow air bag 412 is fixedly disposed in the control cavity 343, the first rack 413 is slidably connected to the control cavity 343, the top of the first rack 413 is fixedly connected to the telescopic hollow air bag 412, the first rotating gear 414 is rotatably connected to the control cavity 343, the second rotating gear 415 is rotatably connected to the rotating cavity 344, the second rotating gear 415 is engaged with the first slider 411, the first rotating gear 414 is fixedly connected with the second rotating gear 415 through the first rotating shaft 416, a sliding rod cavity 345 is further formed in one side of the control cavity 343, one end of the heat conducting rod 419 is fixedly arranged on one side of the lower die 5, the other end of the heat conducting rod 419 is inserted into the sliding rod cavity 345, the heat absorbing sheet 417 is embedded in the side wall of the sliding rod cavity 345, and the heat absorbing sheet 417 is connected with the telescopic hollow air bag 412 through the heat conducting wires 418. In this embodiment, the first rotating gear 414 is a ratchet gear; when the lower mold 5 moves to a position right below the preheating mechanism 6, the main control box 10 controls the preheating mechanism 6 to work, at this time, the heat conducting rod 419 at one side of the lower mold 5 is heated to raise the temperature, because the heat conducting rod 419 abuts against the heat absorbing sheet 417, the heat conducting rod 419 transfers the heat to the heat absorbing sheet 417, and transfers the heat to the telescopic hollow air bag 412 through the heat conducting wire 418, so that the telescopic hollow air bag 412 is heated to expand, the telescopic hollow air bag 412 expands to drive the first rack 413 to move in the control cavity 343, the first rack 413 drives the first rotating gear 414 to rotate, the first rotating gear 414 drives the second rotating gear 415 to rotate through the first rotating shaft 416, and further drives the first sliding block 411 to move upwards along the first through hole 342, so that the lower mold 5 extends into the preheating mechanism 6, at this time, the first rotating gear 414 is disengaged from the first rack 413, and the position of the first sliding block 411 is fixed by the position limiting component 42, it can be prevented from sliding up and down.

Specifically, the position-limiting assembly 42 includes a rotating block 421, a second rotating shaft 422, a torsion spring 423, a push plate 424, a sleeve 425, a first compression spring 426, a first connecting rod 427, a first cylinder 428, a cone block 429 and a second compression spring 4210, the rotating block 421 is rotatably connected to the side wall of the working chamber 341 through the second rotating shaft 422, the torsion spring 423 is sleeved on the second rotating shaft 422, the rotating block 421 is fixedly connected to the side wall of the working chamber 341 through the torsion spring 423, an accommodating groove 4211 is formed in the center of the side wall of the rotating block 421, the push plate 424 is slidably connected to the control chamber 343, one end of the sleeve 425 is rotatably connected to the push plate 424, the other end of the sleeve 425 is inserted into the accommodating groove 4211, the sleeve is fixedly connected to the bottom wall of the accommodating groove 4211 through the first compression spring 426, the first cylinder 428 is disposed in the working chamber 341, the first cylinder 428 is fixedly connected to the sleeve 425 through the first connecting rod 427, one end of the cone block 429 is inserted into the first cylinder 428, and the cone block 429 is fixedly connected with the bottom wall of the first cylinder 428 through a second compression spring 4210, a positioning groove 4212 matched with the cone block 429 is formed in the side surface of the first sliding block 411, and clamping grooves 4213 are formed in the top of the working cavity 341 and the side surface of the rotating block 421. In this embodiment, in the initial state, the first cylinder 428 is engaged with the engaging groove 4213, and the cone block 429 is inserted into the positioning groove 4212 to fix the first sliding block 411. When the hardware 11 is heated and heated in the preheating mechanism 6, the temperature of the heat conducting rod 419 will be synchronously raised until a certain temperature gradient is reached, at this time, the telescopic hollow airbag 412 continues to expand, so that the first rack 413 abuts against the push plate 424 and drives the push plate 424 to slide in the control cavity 343, the push plate 424 drives the sleeve 425 to synchronously move along the accommodating groove 4211 and compress the first compression spring 426, at this time, the first cylinder 428 is clamped into the clamping groove 4213 on the surface of the rotating block 421 by the clamping groove 4213 on one side of the working cavity 341, so that the first cylinder 428 and the rotating block 421 are fixedly connected into a whole, at this time, the first sliding block 411 moves downwards along the first through hole 342 under the gravity of the processing platform 34 and the lower die 5, at the same time, the rotating block 421 is driven to rotate and twist the torsion spring 423 by the cone block 429 and the first cylinder 428, at this time, the cone block 429 is separated from the accommodating groove 4212, and then, the rotating block 421 rotates reversely under the restoring action of the torsion spring 423, make in the awl piece 429 take in first cylinder 428 and compress second compression spring 4210 to realize heating the effect of taking out it in preheating mechanism 6 automatically after the high temperature state at hardware 11, then master control box 10 control driving motor 31 work removes lower mould 5 to pre-compaction position, and heat conduction pole 419 is no longer heated this moment, thereby exports the heat in the hollow gasbag 412 that will stretch out and draw back, makes hollow gasbag 412 shrink, and each part gets back to initial position again this moment.

Specifically, the preheating mechanism 6 comprises a preheating box 61, a heating coil 62 and a heat insulation plate 63, the preheating box 61 is fixedly arranged on the rack 1, a preheating cavity 64 is formed in the preheating box 61, an annular cavity 65 is circumferentially formed outside the preheating cavity 64, the heating coil 62 is fixedly arranged in the annular cavity 65, the heat insulation plate 63 is circumferentially fixedly arranged outside the annular cavity 65, and a second through hole 66 communicated with the preheating cavity 64 is further formed in the bottom of the preheating box 61. In operation, the main control box 10 controls the heating coil 62 to be started, and the heating coil 62 enables the temperature inside the preheating cavity 64 to be high. The side surface of the lower die 5 is fixedly provided with a sealing ring, and when the lower die 5 is abutted against the second through hole 66, the second through hole 66 is sealed, so that the dissipation of heat in the preheating cavity 64 is reduced, the heating speed can be increased, and meanwhile, the energy can be saved. The heat shield 63 is used for heat insulation and can prevent the external temperature of the preheating chamber 61 from being too high, so that the heat is completely transferred into the preheating chamber 64.

Specifically, the prepressing mechanism 7 includes a supporting plate 71, a lifting motor 72, a third rotating gear 73, a second rack 74 and a pressing plate 75, the supporting plate 71 is transversely and fixedly disposed above the sliding support 2, the lifting motor 72 is fixedly disposed on the supporting plate 71, the third rotating gear 73 is fixedly disposed at a power output end of the lifting motor 72, a third through hole 76 is formed in the supporting plate 71, the second rack 74 is slidably connected in the third through hole 76, one end of the second rack 74 is fixedly connected with the pressing plate 75, the other end of the second rack 74 is engaged with the third rotating gear 73, and the upper die 9 is detachably mounted at the bottom of the pressing plate 75. In this embodiment, when the lower mold 5 moves to a position right below the pressing plate 75, the main control box 10 controls the lifting motor 72 to operate, the lifting motor 72 drives the third rotating gear 73 to rotate, and further drives the second rack 74 to slide downwards along the third through hole 76, and the second rack 74 drives the pressing plate 75 to move downwards, so that the upper mold 9 extrudes the hardware 11 downwards and closes the upper mold 9 and the lower mold 5.

Specifically, the polishing mechanism 8 includes a base 81, an annular guide rail 82, a polishing seat 83, a traveling motor 84, a first bevel gear 85, a second bevel gear 86, a third rotating shaft 87, rollers 88, a first support rod 89, a cross beam 810, an electric telescopic rod 811, a second slider 812, a polishing motor 813 and a polishing wheel 814, the base 81 is fixedly disposed at the bottom of the rack 1, the annular guide rail 82 is fixedly disposed on the base 81, the polishing seat 83 is slidably connected to the annular guide rail 82, a driving groove 815 is disposed at the bottom of the polishing seat 83, the traveling motor 84 is embedded at the top of the driving groove 815, the first bevel gear 85 is fixedly disposed at a power output end of the traveling motor 84, the second bevel gear 86 is disposed in the driving groove 815, the second bevel gear 86 is engaged with the first bevel gear 85, two rollers 815 are disposed in the driving groove, the two rollers 88 are rotatably connected to the driving groove 815 through the third rotating shaft 87, the second bevel gear 86 is fixedly disposed on the third rotating shaft 87, crossbeam 810 is fixed in the seat 83 top of polishing through first branch 89, second slider 812 sliding connection on crossbeam 810, and electric telescopic handle 811's stiff end is fixed in one side of first branch 89, and electric telescopic handle 811's free end and one side fixed connection of second slider 812, grinding motor 813 inlays in second slider 812 opposite side, and grinding wheel 814 sets firmly in grinding motor 813's power take off end. In this embodiment, when the lower mold 5 moves to the pre-pressing position, the lower mold 5 is located at the center of the circular guide 82. After the pre-pressing is completed, the main control box 10 controls the traveling motor 84 to start, the traveling motor 84 drives the first bevel gear 85 to rotate, the first bevel gear 85 drives the second bevel gear 86 to rotate, the second bevel gear 86 drives the roller 88 to roll on the annular guide rail 82 through the third rotating shaft 87, so that the polishing seat 83 is driven to rotate circumferentially around the lower die 5, and the effect of adjusting the polishing position of the polishing wheel 814 is achieved; when grinding wheel 814 rotates the position of polishing, total control box 10 control electric telescopic handle 811 starts for second slider 812 slides along crossbeam 810, and then makes grinding wheel 814 butt in hardware 11 surface, and grinding motor 813 starts to drive grinding wheel 814 and rotates this moment, thereby gets rid of the burr on hardware 11 surface. In addition, total control box 10 can also be adjusted to the manually operation state, and then makes operating personnel can the 8 work of independent control grinding machanism to can carry out solitary processing of polishing to the great hardware 11 of shape and size deviation before the pre-compaction processing, thereby prevent that mould 9, lower mould 5 or hardware 11 itself from being crushed on the pre-compaction in-process, influence the machining precision, reduce processingquality.

The invention discloses a use method of a pre-pressing device for a precision hardware press die, which comprises the following steps:

s1, an operator controls the conveyer belt 33 to work through the master control box 10, moves the lower die 5 to the leftmost end of the rack 1, and places the hardware 11 on the lower die 5;

s2, preheating, wherein the lower die 5 is moved into the preheating box 61, and the hardware 11 is heated to a high temperature state by the heating coil 62 to be softened;

s3, after preheating is finished, the lower die 5 is moved to a position right below the prepressing mechanism 7, the prepressing mechanism 7 drives the upper die 9 to press downwards, and the hardware 11 is subjected to prepressing treatment, so that the shape and the size of the hardware are corrected;

and S4, after the pre-pressing is finished, removing burrs on the surface of the hardware 11 by the grinding mechanism 8.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.

Claims

1. The utility model provides a pre-compaction device of accurate five metals moulding-die which characterized in that: comprises a frame (1), a sliding support (2), a conveying mechanism (3), a lifting mechanism (4), a lower die (5), a preheating mechanism (6), a prepressing mechanism (7), a polishing mechanism (8), an upper die (9) and a master control box (10), wherein the sliding support (2) is transversely and fixedly arranged in the middle of the frame (1), the conveying mechanism (3) is arranged on the sliding support (2), the conveying mechanism (3) comprises a driving motor (31), driving wheels (32), a conveying belt (33) and a processing platform (34), the driving motor (31) is fixedly arranged on the outer side of the sliding support (2), a first chute (21) is formed in the inner side of the sliding support (2), the two driving wheels (32) are rotatably connected to the inner wall of the first chute (21), the power output end of the driving motor (31) is connected with one of the driving wheels (32), and the two driving wheels (32) are in transmission connection through the conveying belt (33), the processing platform (34) is connected in the first sliding chute (21) in a sliding manner, the processing platform (34) is fixedly connected with the conveying belt (33), a working cavity (341) is formed in the processing platform (34), a first through hole (342) communicated with the working cavity (341) is formed in the top of the processing platform (34), the lifting mechanism (4) is fixedly arranged in the working cavity (341), the lower die (5) is arranged above the processing platform (34), the lower die (5) is fixedly connected with the lifting mechanism (4), a preheating mechanism (6), a prepressing mechanism (7) and a polishing mechanism (8) are fixedly arranged in the machine frame (1) in sequence, the upper die (9) is fixedly connected with the prepressing mechanism (7), the master control box (10) is fixedly arranged at the bottom of the machine frame (1), and the driving motor (31), the preheating mechanism (6), the pre-pressing mechanism (7) and the polishing mechanism (8) are electrically connected with the master control box (10).

2. The pre-pressing device of the precise hardware press mold according to claim 1, characterized in that: the lifting mechanism (4) comprises a lifting assembly (41) and a limiting assembly (42), the lifting assembly (41) comprises a first sliding block (411), a telescopic hollow air bag (412), a first rack (413), a first rotating gear (414), a second rotating gear (415), a first rotating shaft (416), a heat absorbing sheet (417), a heat conducting wire (418) and a heat conducting rod (419), one end of the first sliding block (411) is fixedly arranged at the bottom of the lower die (5), the other end of the first sliding block (411) is connected in the first through hole (342) in a sliding manner, one side of the working cavity (341) is communicated with a control cavity (343) and a rotating cavity (344), the telescopic hollow air bag (412) is fixedly arranged in the control cavity (343), the first rack (413) is connected in the control cavity (343) in a sliding manner, and the top of the first rack (413) is fixedly connected with the telescopic hollow air bag (412), the first rotating gear (414) is rotatably connected into the control cavity (343), the second rotating gear (415) is rotatably connected into the rotating cavity (344), the second rotating gear (415) is meshed with the first sliding block (411), the first rotating gear (414) is fixedly connected with the second rotating gear (415) through the first rotating shaft (416), a sliding rod cavity (345) is further formed in one side of the control cavity (343), one end of a heat conducting rod (419) is fixedly arranged on one side of the lower die (5), the other end of the heat conducting rod (419) is inserted into the sliding rod cavity (345), a heat absorbing sheet (417) is embedded into the side wall of the sliding rod cavity (345), and the heat absorbing sheet (417) is connected with the telescopic hollow air bag (412) through the heat conducting wires (418).

3. The pre-pressing device of the precise hardware press mold according to claim 2, characterized in that: the limiting assembly (42) comprises a rotating block (421), a second rotating shaft (422), a torsion spring (423), a push plate (424), a sleeve (425), a first compression spring (426), a first connecting rod (427), a first air cylinder (428), a conical block (429) and a second compression spring (4210), the rotating block (421) is rotatably connected to the side wall of the working cavity (341) through the second rotating shaft (422), the torsion spring (423) is sleeved on the second rotating shaft (422), the rotating block (421) is fixedly connected with the side wall of the working cavity (341) through the torsion spring (423), an accommodating groove (4211) is formed in the center of the side surface of the rotating block (421), the push plate (424) is slidably connected into the control cavity (343), one end of the sleeve (425) is rotatably connected with the push plate (424), the other end of the sleeve (425) is inserted into the accommodating groove (4211), and the sleeve (425) is fixedly connected with the bottom wall of the accommodating groove (4211) through the first compression spring (426), first cylinder (428) set up in working chamber (341), first cylinder (428) are through first connecting rod (427) and sleeve (425) fixed connection, and the one end of awl piece (429) is pegged graft in first cylinder (428), and awl piece (429) through second compression spring (4210) and first cylinder (428) diapire fixed connection, constant head tank (4212) with awl piece (429) complex are seted up to first slider (411) side, draw-in groove (4213) have all still been seted up to working chamber (341) top and commentaries on classics piece (421) side.

4. The pre-pressing device of the precise hardware press mold according to claim 1, characterized in that: preheating mechanism (6) are including preheating cabinet (61), heating coil (62) and heat insulating board (63), preheating cabinet (61) set firmly in on frame (1), set up preheating chamber (64) in preheating cabinet (61), annular chamber (65) have been seted up to preheating chamber (64) outside circumference, heating coil (62) set firmly in annular chamber (65), and annular chamber (65) lateral wall circumference has set firmly heat insulating board (63), and second through-hole (66) with preheating chamber (64) intercommunication are still seted up to preheating cabinet (61) bottom.

5. The pre-pressing device of the precise hardware press mold according to claim 1, characterized in that: prepressing mechanism (7) includes backup pad (71), elevator motor (72), third rotating gear (73), second rack (74) and clamp plate (75), sliding bracket (2) top transversely has set firmly backup pad (71), elevator motor (72) set firmly on backup pad (71), third rotating gear (73) set firmly in elevator motor (72) power take off end, third through-hole (76) have been seted up on backup pad (71), second rack (74) sliding connection is in third through-hole (76), the one end and the clamp plate (75) fixed connection of second rack (74), the other end and the third rotating gear (73) meshing of second rack (74), go up mould (9) demountable installation in clamp plate (75) bottom.

6. The pre-pressing device of the precise hardware press mold according to claim 1, characterized in that: the grinding mechanism (8) comprises a base (81), an annular guide rail (82), a grinding seat (83), a walking motor (84), a first bevel gear (85), a second bevel gear (86), a third rotating shaft (87), a roller (88), a first supporting rod (89), a cross beam (810), an electric telescopic rod (811), a second sliding block (812), a grinding motor (813) and a grinding wheel (814), wherein the base (81) is fixedly arranged at the bottom of the rack (1), the annular guide rail (82) is fixedly arranged on the base (81), the grinding seat (83) is slidably connected on the annular guide rail (82), a driving groove (815) is formed in the bottom of the grinding seat (83), the walking motor (84) is embedded in the top of the driving groove (815), the first bevel gear (85) is fixedly arranged at the power output end of the walking motor (84), the second bevel gear (86) is arranged in the driving groove (815), and the second bevel gear (86) is meshed with the first bevel gear (85), be provided with two gyro wheels (88) in drive groove (815), rotate through third pivot (87) and connect in drive groove (815) two gyro wheels (88), second bevel gear (86) set firmly on third pivot (87), crossbeam (810) are fixed in seat (83) top of polishing through first branch (89), second slider (812) sliding connection is on crossbeam (810), the stiff end of electric telescopic handle (811) is fixed in one side of first branch (89), the free end of electric telescopic handle (811) and one side fixed connection of second slider (812), grinding motor (813) inlay in second slider (812) opposite side, grinding wheel (814) set firmly in the power take off end of grinding motor (813).

7. The use method of the prepressing device of the precision hardware press mold according to any one of claims 1 to 6, characterized in that:

s1, an operator controls the conveyer belt (33) to work through the master control box (10), moves the lower die (5) to the leftmost end of the rack (1), and places the hardware (11) on the lower die (5);

s2, preheating, wherein the lower die (5) is moved into a preheating box (61), and the hardware (11) is heated to a high-temperature state by a heating coil (62) to be softened;

s3, after preheating is finished, the lower die (5) is moved to a position right below the pre-pressing mechanism (7), the pre-pressing mechanism (7) drives the upper die (9) to press downwards, pre-pressing treatment is carried out on the hardware (11), and then the shape and the size of the hardware are corrected;

and S4, after the pre-pressing is finished, removing burrs on the surface of the hardware (11) by a grinding mechanism (8).