CN108749096B - Multi-station hot pressing system for brake pad - Google Patents

Abstract

The invention provides a multi-station hot-pressing system for a brake pad, which comprises a supporting base, a servo manipulator, a die feeding device, at least one mixing stirring weighing machine and at least one brake pad hot press, wherein the supporting base is provided with a plurality of hot-pressing grooves; the brake block hot press is installed on the support base, the mixing stirring weighting machine is installed above the side of the brake block hot press, the servo manipulator is installed beside the brake block hot press, the die feeding device is installed on the servo manipulator, and the die feeding device can take out and put in mixed friction materials in the mixing stirring weighting machine into a die cavity of each brake block hot press under the driving of the servo manipulator. According to the invention, the mixing and weighing machine is used for completing the mixing and weighing work, the servo manipulator is used for driving the die feeding device to complete the material receiving and feeding work, so that the manpower is saved, the uncontrollable factors caused by human factors are reduced, and meanwhile, the cost is saved and the production efficiency is improved.

Description

Multi-station hot pressing system for brake pad

Technical Field

The invention belongs to the field of brake pad hot pressing equipment, and particularly relates to a brake pad multi-station hot pressing system.

Background

With the development of transportation industry, automobiles become the most common transportation tools, in a brake system of the automobiles, brake pads are the most critical safety parts, and all the braking effects are decisive by the brake pads, so that the brake pads are the protection spirit of people and automobiles. The brake pad is used as a vulnerable part, and the demand is great.

The existing brake pad is mostly formed by hot press forming, the friction base materials of different components are required to be mixed to form a mixed friction material in the hot press forming process, the mixed friction material is weighed, the thickness of the brake pad is different due to the fact that the mixed friction material with different qualities is different, and a large error is caused, so that the weighing precision of the mixed friction material in the hot press forming process is required, the existing mixed friction material weighing work is completed by manpower, the mixed friction material is placed into a cavity of a hot press by the manpower, the process is low in efficiency, smoke dust is more, health of workers is seriously threatened, and meanwhile due to shortage of manpower resources, the traditional production mode is high in labor cost, and therefore a brake pad multi-station hot press system is required to be arranged to improve efficiency, save manpower and reduce cost.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, the present invention is directed to a multi-station hot pressing system for a brake pad, which is used for improving efficiency, saving manpower and reducing cost of the brake pad.

In order to achieve the above and other related objects, the present invention provides a multi-station hot pressing system for brake pads, which is characterized by comprising a support base, a servo manipulator, a mold feeding device, at least one mixing and stirring weighing machine and at least one brake pad hot press; the brake block hot press is installed on the support base, the mixing stirring weighting machine is installed above the side of the brake block hot press, the servo manipulator is installed beside the brake block hot press, the die feeding device is installed on the servo manipulator, and the die feeding device can take out and put in mixed friction materials in the mixing stirring weighting machine into a die cavity of each brake block hot press under the driving of the servo manipulator.

Preferably, the mixing stirring weighing machine comprises a weighing frame body, a mixing stirring device, a coarse and fine adding auger and a weighing control system; the mixing and stirring device is arranged on the weighing frame body, a feeding port is arranged at the upper part of the mixing and stirring device, and a discharging port is arranged at the lower part of the mixing and stirring device; the coarse and fine screw conveyer comprises a shell, a transmission assembly, a screw conveyer driving device, a first screw conveyer group and a second screw conveyer group; the feeding end of the shell is provided with a feeding hole, the discharging end of the shell is provided with auger barrels with the number matched with that of the augers, the axes of the auger barrels are parallel, the inner cavities of the auger barrels are mutually independent, and each auger barrel is provided with a discharging hole; the augers in the first auger set and the second auger set are respectively rotatably arranged in the corresponding auger barrels, and the first shaft ends positioned on the same side of each auger extend out of the shell; the transmission assembly comprises a driving gear fixedly arranged on an output shaft of the auger driving device, a plurality of one-way bearings respectively and correspondingly arranged at the first shaft ends, and driven gears correspondingly arranged on the one-way bearings; the driving gear is meshed with one or more of the driven gears, and can only drive the augers in the first auger set to rotate when the auger driving device rotates positively, and only drive the augers in the second auger set to rotate when the auger driving device rotates reversely; a storage bin is fixedly arranged at the discharge end of the shell, the discharge ports on the auger barrels are communicated with the storage bin, a discharging port is arranged at the lower part of the storage bin, and a plugboard capable of opening or closing the discharging port by linear movement is arranged on the discharging port; the plugboard is driven by the plugboard linear movement driving device; the discharging port of the storage bin is communicated with the secondary storage bin, a first discharging port is formed in the bottom of the secondary storage bin, and a first door plate driving device capable of opening or closing the first door plate are arranged on the first discharging port; the weighing control system comprises a weighing sensor and a controller, wherein the weighing sensor is used for weighing materials in the secondary storage bin; the weighing sensor is electrically connected with the controller, and the controller is electrically connected with the plugboard linear movement driving device, the auger driving device and the first door plate driving device respectively.

Further, the mixing and stirring device comprises a stirring bin, a stirring main shaft, a stirring driving device, a turnover limiting device and a plurality of stirring units; the material inlet is arranged at the upper part of the stirring bin, and the material outlet is arranged at the lower part of the stirring bin; the feeding hole of the coarse and fine adding auger is rigidly and fixedly connected with the discharging hole of the mixing and stirring device; the stirring main shaft is rotatably arranged on the stirring bin, and one end of the stirring main shaft extends out of the stirring bin; the stirring driving device and the overturning driving device are respectively and fixedly arranged on the weighing frame bodies on two sides of the stirring bin, and an output shaft of the stirring driving device is fixedly connected with the extending end of the stirring main shaft; the overturning main shaft of the overturning driving device is coaxially arranged with the stirring main shaft and fixedly connected with the stirring bin; the stirring main shafts and the overturning main shafts on two sides of the stirring bin are also respectively arranged on the weighing frame body through supporting bearing parts; the stirring units are arranged on the stirring main shaft in the stirring bin; the overturning limiting device is fixedly arranged on the stirring bin and can limit and stop the stirring bin when the feeding port is overturned to be in butt joint with the feeding position.

Further, the mixing stirring material weighing machine also comprises a material receiving device; the material receiving device comprises a material receiving frame body, a supporting plate, a left-right linear movement driving device, a front-back linear movement driving device, a waste box and a plurality of material receiving boxes, wherein the waste box is fixedly arranged on the material receiving frame body, the material receiving boxes are fixedly arranged on the supporting plate, and the material receiving frame body can be arranged on the material weighing frame body in a front-back linear movement manner and can be driven by the front-back linear movement driving device to linearly move along the front-back direction; the supporting plate can move linearly left and right and is arranged on the material receiving frame body and can move linearly left and right under the drive of the left and right linear movement driving device; the receiving box comprises a box body, a box cover and a box cover opening and closing driving device, wherein the box cover is arranged at the opening of the lower part of the box body, and the left-right linear movement driving device, the front-back linear movement driving device and the box cover opening and closing driving device are electrically connected with the controller.

Still further, the mixing stirring material weighing machine further comprises a feeding device, wherein the feeding device comprises a vertical lifting driving device, a material basket placing platform and a vertical lifting device, the vertical lifting device is correspondingly arranged on the material weighing frame body on one side of the mixing stirring device, the material basket placing platform is fixedly connected with a movable lifting end of the vertical lifting device, and the vertical lifting driving device drives the movable lifting end to drive the material basket placing platform to vertically move up and down between a lower material discharging position and an upper material charging position; the size of the feed opening on the stirring bin is larger than the overall size of the charging basket, a charging basket chamber capable of accommodating the charging basket is arranged on the upper side of the inside of the stirring bin, and a stop part for stopping the charging basket from entering the stirring chamber is arranged between the charging basket chamber and the stirring chamber at the lower part.

Still further, mixing stirring is weighed the material machine is last throw material position department still be provided with will the charging basket place the platform with throw smooth connection's between the material mouth transition platform, transition platform with be provided with a plurality of rollers on charging basket place the mesa of platform.

Preferably, the brake pad hot press comprises a machine body, an upper die part, a middle die part, a lower die part, a guiding device, a main hydraulic cylinder and at least two auxiliary hydraulic cylinders; the lower part of the machine body is provided with a base, the upper part of the machine body is provided with an upper die fixing seat, and the upper die fixing seat is fixedly connected with the base through a support column; the upper die part is fixedly arranged on the upper die fixing seat, the cylinder body of the main hydraulic cylinder and the cylinder body of the auxiliary hydraulic cylinder are fixedly arranged on the base, the end parts of piston rods of the main hydraulic cylinder vertically extend upwards and are fixedly connected with the lower die part, and the end parts of piston rods of the at least two auxiliary hydraulic cylinders also vertically extend upwards and are fixedly connected with the middle die part arranged above the lower die part; a male die is fixedly arranged on the upper side of the lower die part, and a friction material block cavity which penetrates up and down is arranged on the middle die part at a position corresponding to the male die; the guide device comprises at least two guide posts which are fixedly connected with the middle die part and vertically extend downwards, guide holes which are arranged on the lower die part and are matched with the guide posts, and stop lifting parts which are equal to the guide posts in number; the lower end of the guide post penetrates through the corresponding guide hole and then is fixedly connected with the lower stop lifting part, and the outer diameter of the stop lifting part is larger than the inner diameter of the guide hole.

Preferably, the mold feeding device comprises a cleaning device, a feeding device, a manipulator sucker capable of being connected with the servo manipulator and a locking device capable of detachably locking and fixing the feeding device and the cleaning device.

Further, the feeding device comprises a first plate body, a second plate body, a baffle plate linear driving device and a plurality of feeding hoppers; the lower parts of the plurality of feeding hoppers are respectively fixedly arranged on the first plate body, and a first blanking opening is arranged on the first plate body corresponding to the positions of the plurality of feeding hoppers; the second plate body is arranged below the first plate body and fixedly connected with the first plate body, and a second blanking opening is formed in a position, corresponding to the first blanking opening, on the second plate body; the first plate body and be provided with between the second plate body with baffle thickness assorted cavity, the baffle is installed in the cavity and can be under baffle linear drive device's drive with first feed opening with the second feed opening link up or the isolation.

Further, the locking device comprises a bottom plate and a movable frame body; one end of the bottom plate is fixedly connected with a frame body of the cleaning device, two first rotary cylinders are arranged on the bottom plate, cylinder rotating shafts of the two first rotary cylinders penetrate through the bottom plate to extend downwards, and first pressing sheets are arranged on the cylinder rotating shafts; the baffle plate linear driving device is arranged at the lower part of the bottom plate, and the moving end of the baffle plate linear driving device is fixedly connected with the moving frame body arranged below the bottom plate; the movable frame body is provided with two second rotary cylinders, cylinder rotating shafts of the two second rotary cylinders penetrate through the movable frame body to extend downwards, and the upper part of the movable frame body is provided with a second pressing sheet; the first plate body is installed in the lower part of bottom plate to compress tightly or release through two first preforming, the baffle sets up remove the support body below and compress tightly or release through two second preforming, first plate body with be provided with first positioner between the bottom plate, the baffle with remove and be provided with second positioner between the support body.

As described above, the present invention has the following advantageous effects: during operation, the friction material is put into the mixing stirring weighing machine, the servo manipulator drives the mold feeding device to move to the discharging position of the mixing stirring weighing machine to connect out the weighed friction material in the mixing stirring weighing machine, the servo manipulator drives the mold feeding device to move to the designated brake block hot press, and the friction material is put into the mold cavity of the brake block hot press. According to the invention, the mixing and weighing machine is used for completing the mixing and weighing work, the servo manipulator is used for driving the die feeding device to complete the material receiving and feeding work, so that the manpower is saved, the uncontrollable factors caused by human factors are reduced, and meanwhile, the cost is saved and the production efficiency is improved.

Drawings

FIG. 1 is a three-dimensional isometric view of example 1 of the invention;

FIG. 2 is a right side view of embodiment 1 of the present invention;

FIG. 3 is a top view of embodiment 1 of the present invention;

FIG. 4 is a three-dimensional isometric view of a mixing and weighing machine;

FIG. 5 is a front view of a mixing and weighing machine;

FIG. 6 is a right side view of FIG. 5;

FIG. 7 is a three-dimensional isometric view of a mixing device and a coarse and fine auger portion of the mixing and weighing machine;

FIG. 8 is a front cross-sectional view of the portion shown in FIG. 7;

FIG. 9 is a B-B cross-sectional view of FIG. 8;

FIG. 10 is a cross-sectional view taken along the direction C-C in FIG. 8;

FIG. 11 is a three-dimensional isometric view of a coarse and fine screw in a mixing and stirring scale;

FIG. 12 is a cross-sectional view of a coarse and fine screw drive assembly in a mixing and stirring scale;

fig. 13 is a three-dimensional structure diagram of a receiving device in the mixing and stirring material weighing machine.

FIG. 14 is a schematic three-dimensional view of a brake pad press;

FIG. 15 is a front view of a brake pad press;

FIG. 16 is a schematic view of a three-dimensional structure of the brake pad hot press with the support post, upper mold mounting seat, upper mold section removed;

FIG. 17 is a front cross-sectional view of the structure of FIG. 16;

FIG. 18 is a three-dimensional isometric view of a mold loading apparatus;

FIG. 19 is a bottom view of the mold loading apparatus;

FIG. 20 is a block diagram of a loading device in a mold loading device;

FIG. 21 is a schematic view of the upper hopper in the mold loading apparatus;

FIG. 22 is a partial cross-sectional view of the cleaning head in the mold loading device;

FIG. 23 is a schematic three-dimensional structure of example 2 of the present invention.

In the figure: 1. a charging basket; 2. mixing and stirring a material weighing machine; 3. a die feeding device; 4. a servo manipulator; 5. a support base; 6. a brake block hot press; 7. a tool library; 8. a hydraulic station; 9. an electric control cabinet; 2100. weighing a material rack body; 2200. a mixing and stirring device; 2300. a feeding device; 2400. adding a packing auger in a coarse and fine manner; 2500. a transition platform; 2600. a receiving device; 2210. stirring bin; 2220. a stirring main shaft; 2230. a stirring driving device; 2240. a flip driving device; 2250. a turnover limiting device; 2260. a stirring unit; 2270. a support bearing portion; 2280. An angle sensor; 2290. a material detection sensor; 2211. a feed port; 2212. a discharge port; 2213. a nitrogen spring; 2214. a door panel; 2215. a basket chamber; 2216. a stop portion; 2261. an arm body; 2262. a coulter; 2310. a vertical lift driving device; 2320. a vertical lifting device; 2330. a charging basket placing platform; 2410. a housing; 2420. a transmission assembly; 2430. auger driving device; 2440. a first auger set; 2450. a second auger set; 2460. a secondary storage bin; 2411. a feed inlet; 2412. An auger barrel; 2413. a storage bin; 2414. inserting plate; 2415. the plugboard linearly moves the driving device; 2421. a drive gear; 2422. a one-way bearing; 2423. a driven gear; 2461. a first discharge port; 2462. a first door panel; 2463. a first door panel driving device; 2610. a receiving rack body; 2620. a supporting plate; 2630. a left-right linear movement driving device; 2640. a driving device for linearly moving back and forth; 2650. a waste bin; 2660. a receiving box; 2661. a case body; 2662. a box cover; 2663. a box cover opening and closing driving device; 61. A body; 62. a middle mold part; 63. a lower die section; 64. a guide device; 65. a master hydraulic cylinder; 66. an auxiliary hydraulic cylinder; 67. a displacement sensor; 68. a grating sensor; 69. an optical eye sensor; 610. an upper die part; 611. a base; 612. a support column; 613. an upper die fixing seat; 614. a pull rope sensor; 615. a locknut; 621. middle mold; 622. middle die frame; 623. a rapid compacting device; 6211. a friction material block cavity; 6221. a lower die avoiding hole; 631. a lower die; 632. a heating block; 633. a heat insulating plate; 634. a lower die fixing seat; 6311. A male die; 6321. a substrate; 6322. heating pipes; 641. a guide post; 642. a guide sleeve; 643. a stop pull-up part; 31. a cleaning device; 32. a feeding device; 33. a locking device; 311. a cleaning frame body; 312. a cleaning assembly; 313. a cleaning drive device; 321. a first plate body; 322. a second plate body; 323. a partition plate; 324. feeding a hopper; 325. a straight line cylinder; 326. a manipulator suction cup; 327. a release agent nozzle; 3231/3211, locating holes; 3241. an arc opening; 3242. a material containing cavity; 3243. a hopper base; 3244. A die cavity guide port; 3312. a first tabletting; 3322. a second tabletting step; 3313/3323, bumps; 3311. a first rotary cylinder; 331. a bottom plate; 332. moving the frame body; 3321. a second rotary cylinder; 3131. an output shaft; 3121. a cleaning head; 31211. a sweeping disc; 31212. a rotating shaft; 31213. a brush; 3132. a pneumatic motor.

Detailed Description

The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the disclosure of the present invention, and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the terms of modification, variation of proportions, or adjustment of sizes, without affecting the efficacy or achievement of the present invention, should be understood as falling within the scope of the present invention. Also, the terms such as "upper", "lower", "front", "rear", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the invention for which the invention may be practiced or for which the relative relationships may be altered or modified without materially altering the technical context.

Example 1

As shown in fig. 1-22, the invention provides a multi-station hot pressing system for brake pads, which comprises a supporting base 5, a servo manipulator 4, a die feeding device 3, a hydraulic system 8, an electric control system 9, two mixing and stirring weighing machines 2 and four brake pad hot presses 6; four brake block hot presses 6 are the straight line and arrange and install on supporting base 5, and the material machine 2 is weighed in the mixed stirring is installed in the side top of brake block hot press 6, and servo manipulator 4 is installed in brake block hot press 6 side, and mould loading attachment 3 is installed on servo manipulator 4, and mould loading attachment 3 can be under servo manipulator 4 drive with the mixed friction material in weighing machine 2 connect out and put in the mould die cavity of every brake block hot press 6.

The servo manipulator 6 in the invention is an outsourcing part (the servo manipulator in the embodiment is an SR50 six-axis robot of Qingdao Xinsong robot automation limited company, and can realize rotation of 6 directions and different angles), when the automatic brake pad hot press is in operation, friction materials are put into the mixing stirring weighing machine 2, the servo manipulator 4 drives the mold feeding device 3 to move to the discharging position of the mixing stirring weighing machine 2 to take out the weighed friction materials in the mixing stirring weighing machine 2, then the servo manipulator 4 drives the mold feeding device 3 to move to the designated brake pad hot press 6, and then the friction materials are put into the mold cavity of the brake pad hot press 6. According to the invention, the mixing and weighing machine is used for completing the mixing and weighing work, the servo manipulator is used for driving the die feeding device to complete the material receiving and feeding work, so that the manpower is saved, the uncontrollable factors caused by human factors are reduced, and meanwhile, the cost is saved and the production efficiency is improved.

The mixing and stirring weighing machine in the invention can be a conventional mixing and stirring weighing device in the prior art, and the mixing and stirring weighing machine 2 in the embodiment comprises a weighing frame body 2100, a mixing and stirring device 2200, a coarse and fine adding auger 2400 and a weighing control system; the mixing and stirring device 2200 is arranged on the weighing frame body 2100, a material inlet 2211 is arranged at the upper part of the mixing and stirring device 2200, and a material outlet 2212 is arranged at the lower part of the mixing and stirring device 2200; the coarse and fine screw 2400 includes a housing 2410, a transmission assembly 2420, a screw drive 2430, a first screw set 2440, and a second screw set 2450; the feeding end of the shell 2410 is provided with a feeding port 2411, the discharging end of the shell 2410 is provided with auger drums 2412 with the number matched with that of the augers, the axes of the auger drums 2412 are parallel and the inner cavities are mutually independent, and each auger drum 2412 is provided with a discharging port; the augers in the first and second auger sets 440, 450 are rotatably mounted in corresponding auger barrels 2412, respectively, and the first shaft ends on the same side of each auger extend out of the housing 2410; the transmission assembly 2420 comprises a driving gear 2421 fixedly arranged on the output shaft of the screw driving device 2430, a plurality of one-way bearings 2422 respectively and correspondingly arranged on each first shaft end, and a driven gear 2423 correspondingly arranged on each one-way bearing 2422; the driving gear 2421 is meshed with one or more of the driven gears 2423, and can only drive the augers in the first auger set 2440 to rotate when the auger driving device 2430 rotates positively, and only drive the augers in the second auger set 2450 to rotate when the auger driving device 2430 rotates reversely; a storage bin 2413 is fixedly arranged at the discharge end of the shell 2410, discharge ports on each auger cylinder 2412 are communicated with the storage bin 2413, a discharge port is arranged at the lower part of the storage bin 2413, and a plugboard 2414 capable of opening or closing the discharge port by linear movement is arranged on the discharge port; the insert plate 2414 is driven by an insert plate linear movement driving device 2415; the discharging opening of the storage bin 2413 is communicated with a secondary storage bin 2460, a first discharging opening 2461 is formed in the bottom of the secondary storage bin 2460, and a first door plate 2462 and a first door plate driving device 2463 capable of opening or closing the first door plate 2462 are arranged on the first discharging opening 2461; the weighing control system comprises a weighing sensor and a controller, wherein the weighing sensor weighs materials in the secondary storage bin 2460; the weighing sensor is electrically connected with a controller, and the controller is electrically connected with the plugboard linear movement driving device 2415, the auger driving device 2430 and the first door plate driving device 2463 respectively.

When the mixing and weighing machine 2 in this embodiment works, various weighed friction materials are firstly put into the mixing and stirring device 2200 from the feeding port 2211, are discharged from the discharging port 2212 of the mixing and stirring device 2200 after being stirred by the mixing and stirring device 2200, enter the shell 2410 of the coarse and fine screw 2400 through the feeding port 2411 of the coarse and fine screw 2400, when the first threshold value set by the weighing sensor is not reached, the controller controls the screw group with larger conveying capacity to work so as to realize large conveying capacity conveying, when the first threshold value set by the weighing sensor (i.e. early warning value) is reached, the controller controls the screw driving device 2430 to reversely rotate so as to drive the screw group with smaller conveying capacity to work, so that small conveying capacity and high precision conveying are realized, and when the second threshold value set by the weighing sensor (i.e. when the set mixture weight) is reached, the controller controls the linear movement driving device to close the insert plate 2414, and the mixture falling into the storage bin 2413 is isolated from the mixture in the secondary storage bin 2460 due to inertia. The whole stirring and weighing processes of the invention can be automatically controlled by the controller, so that the labor capacity of workers is reduced, the health damage of the workers is avoided, in addition, the invention can ensure that the large-conveying-capacity conveying can be quickly carried out before the set first threshold value is not reached, and the slow fine feeding of another auger group with small conveying capacity can be started when the set first threshold value is reached, so that the insert plate 2414 can be quickly closed when the set second threshold value is reached, and the conveying efficiency and the weighing precision can be ensured.

The mixing stirring device 2200 in the present embodiment includes a stirring bin 2210, a stirring main shaft 2220, a stirring driving device 2230, a flipping driving device 2240, a flipping limiting device 2250, and a plurality of stirring units 2260; the material inlet 2211 is arranged at the upper part of the stirring bin 2210, and the material outlet 2212 is arranged at the lower part of the stirring bin 2210; the feed inlet 2411 of the coarse and fine screw 2400 is rigidly and fixedly connected with the discharge outlet 2212 of the mixing stirring device 2200; the stirring main shaft 2220 is rotatably installed on the stirring bin 2210, and one end extends out of the stirring bin 2210; the stirring driving device 2230 and the overturning driving device 2240 are respectively and fixedly arranged on the material weighing frame body 2100 at two sides of the stirring bin 2210, and an output shaft of the stirring driving device 2230 is fixedly connected with the extending end of the stirring main shaft 2220; the turning main shaft of the turning driving device 2240 is coaxially arranged with the stirring main shaft 2220 and fixedly connected with the stirring bin 2210; the stirring main shaft 2220 and the turning main shaft on both sides of the stirring bin 2210 are also respectively mounted on the weighing frame body 2100 through the support bearing parts 2270; a plurality of stirring units 2260 are installed on the stirring main shaft 2220 within the stirring magazine 2210; the turnover limiting device 2250 is fixedly mounted on the stirring bin 2210 and can limit and stop the stirring bin 2210 when the feeding port 2211 is turned to butt joint with the feeding position. According to the invention, the overturning of the stirring bin 2210 is realized through the overturning driving device 2240, so that the friction material remained at the bottom of the stirring bin 2210 is poured out from the feeding port 2211, the friction material in the bin is easy to pour out, accumulation of materials at the bottom of the stirring bin 2210 during material changing can be avoided, and the component proportion of subsequent material numbers is not influenced. Meanwhile, the working of workers in an environment with more dust is avoided, the labor intensity is reduced, and the health of the workers is protected.

The overturning limiting device 2250 of the present invention can perform forward and backward mechanical limiting only through a stop arm or a travel switch mounted on the stirring bin 2210, but in order to achieve more precise control, an angle sensor 2280 and a controller are further provided in this embodiment, the angle sensor 2280 is mounted at the end of the overturning spindle, and the controller is electrically connected with the angle sensor 2280 and the overturning driving device 2240 respectively.

In order to prevent the stirred mixture from hardening, in this embodiment, the lower wall of the stirring bin 2210 is semi-cylindrical, and the stirring main shaft 2220 and the lower wall are eccentrically arranged (the eccentric distance in this embodiment is smaller and cannot be seen in the figure), and a plurality of stirring units 2260 are respectively fixedly installed on the stirring main shafts 2220 at two sides of the discharge port 2212 of the stirring bin 2210. The stirring unit 2260 comprises an arm body 2261 and coulters 2262 arranged at the end part of the arm body 2261, wherein all coulters 2262 at one side of the discharge port 2212 are all in left-handed rotation, and all coulters 2262 at the other side of the discharge port 2212 are all in right-handed rotation. The end of the plow blade 2262 on the same side of the discharge port 2212 is on the same radial cross section of the mixing spindle 2220 as the beginning of the plow blade 2262 adjacent to and near the side of the discharge port 2212. Thus, after the material leaves the tail end of the previous coulter 2262, the material can be directly received by the start end of the subsequent coulter 2262, and the material can be stably advanced towards the discharge port 2212.

The bottom of the lower wall of the stirring bin 2210 in this embodiment is further provided with a material detection sensor 2290, and the material detection sensor 2290 is electrically connected with the overturning driving device 2240. When the material is cleaned, the turning driving device 2240 can be controlled to be turned on or off by a signal sent by the material detection sensor 2290, so that automatic control can be realized. The material detection sensor 2290 in this embodiment may be various sensors that are currently available and can realize a material detection function, in this embodiment, a capacitive material detection switch, and a control connection manner between the capacitive material detection switch and the overturning driving device 2240 is all in the prior art, which is not described herein.

In this embodiment, nitrogen springs 2213 are hinged at two sides of a feeding port 2211 on a stirring bin 2210, a door plate 2214 is arranged on the feeding port 2211, one side of the door plate 2214 is hinged on the stirring bin 2210, and two sides of the other side are respectively hinged with telescopic shaft ends of the two nitrogen springs 2213. The opening and closing control of the feed inlet 2211 can be realized through the expansion and contraction of the nitrogen spring 2213.

The mixing and weighing machine 2 in this embodiment further includes a receiving device 2300, where the receiving device 2300 includes a receiving frame 2610, a pallet 2620, a left-right linear movement driving device 2630, a front-back linear movement driving device 2640, a waste box 2650, and a plurality of receiving boxes 2660, the waste box 2650 is fixedly mounted on the receiving frame 2610, the plurality of receiving boxes 2660 is fixedly mounted on the pallet 2620, and the receiving frame 2610 is mounted on the weighing frame 2100 through a linear guide rail and can linearly move in the front-back direction under the driving of the front-back linear movement driving device 2640; the pallet 2620 is mounted on the receiving frame body 2610 through a linear guide rail pair and can linearly move in the left-right direction by being driven by the left-right linear movement driving device 2630; the receiving box 2660 comprises a box body 2661, a box cover 2662 and a box cover opening and closing driving device 2663, wherein the box cover 2662 is arranged at the opening of the lower part of the box body 2661, and the left-right linear movement driving device 2630, the front-back linear movement driving device 2640 and the box cover opening and closing driving device 2663 are electrically connected with a controller. The material receiving device 2300 is installed below the first discharge hole 2461, and the material receiving boxes 2660 can all move to the position right below the first discharge hole 2461 under the driving of the left-right linear movement driving device 2630 and the front-back linear movement driving device 2640, so that qualified materials weighed in the secondary storage bin 2460 are received, and the waste boxes 2650 receive the materials in the secondary storage bin 2460 for disposal when the weight of the materials in the secondary storage bin 2460 exceeds a set third threshold value.

The mixing and weighing machine 2 in this embodiment further includes a feeding device 2300, where the feeding device 2300 includes a vertical lifting driving device 2310, a basket placing platform 2330 and a vertical lifting device 2320, where the vertical lifting device 2320 is correspondingly installed on the weighing frame 2100 on one side of the mixing and stirring device 2200, and the basket placing platform 2330 is fixedly connected with a moving lifting end of the vertical lifting device 2320, and the vertical lifting driving device 2310 drives the moving lifting end to drive the basket placing platform 2330 to vertically move up and down between a lower discharging position and an upper charging position; the size of a feed opening 2211 on the stirring bin 2210 is larger than the overall size of the charging basket 1, a charging basket chamber 2215 capable of accommodating the charging basket 1 is arranged on the upper side of the inside of the stirring bin 2210, and a stop portion 2216 for stopping the charging basket 1 from entering the stirring chamber is arranged between the charging basket chamber 2215 and the stirring chamber at the lower part. When the charging basket 1 reaches the feeding position, the stirring bin 2210 is turned 180 degrees, the feeding port 2211 faces the feeding position, the charging basket 1 is pushed into the charging basket chamber 2215 in the stirring bin 2210, the stirring bin 2210 is turned 180 degrees again, the charging basket 1 is stopped by the stopping part 2216, and materials in the charging basket 1 can directly enter the stirring chamber at the lower part of the stirring bin 2210, so that manpower is saved, the whole feeding is performed in the stirring bin 2210, and dust pollution is small.

For more laborsaving, the material position department of mixing stirring title material machine 6 still is provided with the transition platform 2500 of smooth connection between charging basket placing platform 2330 and the feed inlet 2211 in this embodiment, is provided with a plurality of rollers on the mesa of transition platform 2500 and charging basket placing platform 2330, and the roller in this embodiment can realize automatic material through motor drive.

The vertical lifting device 2320 in this embodiment includes two sets of vertically disposed lifting chain assemblies, the lifting chain assemblies include a driving sprocket, a driven sprocket and a chain, the driving sprocket and the driven sprocket are rotatably mounted on the upper portion and the lower portion of the weighing frame body respectively, and the chain is mounted on the driven sprocket and the driving sprocket; the two sides of the basket placing platform 2330 are respectively and fixedly connected with the chains in the two groups of vertical lifting chain components. In order to maintain the synchronism of the two chains, the sprockets of the lower portions of the two sets of lifting chain assemblies in this embodiment are mounted on the same shaft.

The brake pad hot press in the present invention may be a common structure in the prior art, but the brake pad hot press 6 in the present embodiment includes a main body 61, an upper mold portion 610, a middle mold portion 62, a lower mold portion 63, a guiding device 64, a main hydraulic cylinder 65, and two auxiliary hydraulic cylinders 66; a base 611 is arranged at the lower part of the machine body 61, an upper die fixing seat 613 is arranged at the upper part of the machine body 61, and the upper die fixing seat 613 is fixedly connected with the base 611 through a support column 612; two ends of the support column 612 are respectively fixedly connected with the upper die fixing seat 613 and the base 611 through locknuts 615; the upper die part 610 is fixedly arranged on the upper die fixing seat 613, the cylinder body of the main hydraulic cylinder 65 and the cylinder body of the auxiliary hydraulic cylinder 66 are fixedly arranged on the base 611, the end parts of the piston rods of the main hydraulic cylinder 65 vertically extend upwards and are fixedly connected with the lower die part 63, and the end parts of the piston rods of the two auxiliary hydraulic cylinders 66 also vertically extend upwards and are fixedly connected with the middle die part 62 arranged above the lower die part 63; a male die 6311 is fixed on the upper side of the lower die 63, and a friction material block cavity 6211 which penetrates up and down is arranged on the middle die 62 at a position corresponding to the male die 6311; the guiding device 64 comprises at least two guide posts 641 which are fixedly connected with the middle die part 62 and vertically extend downwards, guiding holes which are arranged on the lower die part 63 and are matched with the guide posts 641, and stop lifting parts 643 which are equal to the guide posts 641 in number; the lower end of the guide post 641 passes through the corresponding guide hole and then is fixedly connected with a lower stop lifting part 643, and the outer diameter of the stop lifting part 643 is larger than the inner diameter of the guide hole.

When the brake pad is required to be processed, the lower die 63 is firstly required to be moved downwards, the friction material block cavity 6211 of the middle die 62 is opened, then the mixture is put on the upper surface of the male die 6311 in the friction material block cavity 6211, the steel back is put on the middle die 62 and is correspondingly placed right above the opening of the friction material block cavity 6211, the brake pad hot press starts the pressurizing and deflating process, the auxiliary hydraulic cylinder 66 lifts the middle die 62 upwards during pressurizing, the lower die 63 is lifted upwards together through the stop lifting part 643 at the lower part of the guide post 641, at the moment, the liquid filling valve of the main hydraulic cylinder 65 is opened, oil is quickly filled, after the steel back on the middle die 62 is in pressing contact with the upper die 610 arranged on the upper die fixing seat 613, the auxiliary hydraulic cylinder 66 is used for maintaining pressure, the steel back is always kept in close contact with the upper die 610 and the middle die 62 to prevent the overflow, at this time, the master hydraulic cylinder 65 is started to act to enable the male die 6311 on the lower die 63 to move upwards along the friction material block cavity 6211, the master hydraulic cylinder 65 is used for pressurizing to press and shape the mixture in the middle die 621 cavity, gas is generated due to chemical reaction in the mixture pressing process, in order not to influence pressing quality, the gas is required to be discharged, the state of the auxiliary hydraulic cylinder 66 is unchanged during deflation, the master hydraulic cylinder 65 is decompressed and descended, the gas is discharged, then the master hydraulic cylinder 65 is boosted to continue pressing, after repeated pressing and deflation circulation, the brake block is pressed and molded, the decompression of the auxiliary hydraulic cylinder 66 is descended, the male die 6311 on the lower die 63 supports the molded brake block from the friction material block cavity 6211, the brake block hot press can realize that the auxiliary hydraulic cylinder 66 replaces the original quick cylinder and support die cylinder through structural change, has low energy consumption and reduces the corresponding number of hydraulic components, the difficulty of maintenance is reduced, and the original quick cylinder and the die supporting cylinder are replaced by the auxiliary hydraulic cylinder 66, so that the equipment volume is reduced.

For better control, the brake pad hot press in this embodiment further includes a displacement sensor 67, where a fixed end of the displacement sensor 67 is fixed on the base 611, and a movement measuring end of the displacement sensor 67 extends vertically upward and is fixedly connected to the middle mold 62. The auxiliary hydraulic cylinder 66 in this embodiment detects the lifting height of the middle mold 62 by the displacement sensor 67, determines when the lifting is stopped by the lifting height set in advance in the controller, and also automatically stops before the controller controls the stop lifting part 643 at the bottom end of the guide post 641 to contact with the lower mold fixing seat 634, thereby realizing automatic control. The signal transmission between the controller and the displacement sensor 67 and the electric control connection between the controller and the main hydraulic cylinder 65 and the auxiliary hydraulic cylinder 66 in this embodiment are all common manners in the prior art, and will not be described in detail herein.

Considering that the dies are quick-wear parts and different brake pads are required to be provided with different dies, the middle die part 62 in the embodiment comprises a middle die 621 and a middle die frame 622, the middle die 621 is fixed on the middle die frame 622 through a quick pressing device 623, a friction material block cavity 6211 is arranged on the middle die 621, a lower die avoiding hole 6221 is arranged in the middle of the middle die frame 622, two auxiliary hydraulic cylinders 66 are respectively arranged on two sides of the main hydraulic cylinder 65, the piston rod ends of the two auxiliary hydraulic cylinders 66 are respectively fixedly connected with the left side and the right side of the middle die frame 622, and a male die 6311 on the lower die part 63 extends upwards into the friction material block cavity 6211 on the middle die 621 from the lower die avoiding hole 6221. However, when the middle mold 621 needs to be replaced, the middle mold 621 can be directly removed from the middle mold frame 622, so that the operation is convenient and quick, and the consumption of wearing parts is reduced to a certain extent. The quick-press device 623 in this embodiment is of a conventional construction commercially available in the prior art.

The movable measuring end of the displacement sensor 67 in this embodiment is fixedly connected to the lower side of the middle mold frame 622, so that the displacement detection can be completed, and the movable measuring end can be prevented from being scratched or damaged when the middle mold 621 is replaced.

In order to better realize the hot press molding of the brake pad, the lower die part 63 in the embodiment comprises a lower die 631, a heating block 632, a heat insulation plate 633 and a lower die fixing seat 634; the lower part of the lower die 631 is pressed and installed on the upper part of the heating block 632, the heat insulation plate 633 is installed on the lower part of the heating block 632, the lower part of the heat insulation plate 633 is fixed on the lower die fixing seat 634, and the lower die fixing seat 634 is fixedly installed on the end part of the piston rod of the main hydraulic cylinder 65. This structure can prevent heat in the heating block 632 from being transferred downward to the master cylinder 65 and can transfer the heat source in the heating block 632 to the punch 6311 on the lower die 631. In order to obtain better heat preservation effect and improve heat utilization efficiency, heat insulation plates (not shown in the figure) are also arranged on the upper die part 610 and the middle die part 62 in the embodiment, so that the temperature of the heating plate is conveniently ensured.

The heating block 632 in this embodiment includes a base plate 6321 and a heating pipe 6322 and a thermocouple temperature sensor (not shown) mounted in the base plate 6321. The heating tube 6322 and the thermocouple temperature sensor are both commercially available conventional structures, and the heating, temperature measurement and control manners thereof are also known in the art, and will not be described in detail herein.

In order to make the guiding of the guiding device 64 smoother and more accurate, the guiding hole in this embodiment is the inner hole of the guiding sleeve 642 mounted on the lower die holder 634.

In order to prevent the hands of an operator from touching the dangerous area carelessly during the operation of the brake pad hot press, the brake pad hot press 6 in the embodiment is further provided with a grating sensor 68, wherein the grating sensor 68 is of a commercially available conventional structure and is arranged on an upper touch fixing seat above the side of the operation area, and when the hands enter the operation area during the operation of the brake pad hot press, the alarm can be given and can be connected with a control unit of the brake pad hot press to stop the brake pad hot press.

For better automation control, the brake pad hot press in this embodiment further includes an optical eye sensor 69 for defining the rising position of the middle mold portion 62, and the optical eye sensor 69 is of a commercially available conventional structure and is mounted on the upper mold fixing base 613 to define the rising position of the middle mold 621. The photo eye sensor is used for limiting the ascending height of the middle die and preventing the middle die from being excessively ascended to collide with the upper die part when the die is not installed on the equipment.

It should be noted that, in the present invention, the main hydraulic cylinder 65 and the auxiliary hydraulic cylinder 66 may adopt the same hydraulic station, or may respectively adopt different hydraulic stations, so as to save costs, the main hydraulic cylinder 65 and the auxiliary hydraulic cylinder 66 in this embodiment adopt the same hydraulic station 8 for oil supply, and the hydraulic control manners among the main hydraulic cylinder 65, the auxiliary hydraulic cylinder 66 and the hydraulic stations are the prior art, which will not be described in detail herein. In addition, the upper mold part, the upper mold fixing seat and other structures which are not described in detail in the invention are conventional structures in the prior art, and the specific structure and the installation mode thereof are not described in detail herein.

The brake pad hot press of the embodiment further comprises a pull rope sensor 614 for measuring the pull distance between the lower die 631 and the middle die 621, wherein the pull rope sensor 614 is installed on the lower die fixing seat 634, and the movement measuring end of the pull rope sensor 614 vertically extends upwards and is fixedly connected with the middle die 62. The pull rope sensor 614 is used for measuring the cavity depth of the lower die 631 and the middle die 621 pulled away, when a product is pressed, the pressing thickness of the product can be detected, and when the pressing thickness exceeds the deviation required by the thickness of the product, the equipment gives an alarm and reminds. Is beneficial to controlling the generation of batch waste products.

The mold feeding device in the embodiment of the invention can be of a conventional structure in the prior art, and can be operated only by being connected with the servo manipulator 4, but considering the production requirements of different brake pads, the mold feeding device 3 in the embodiment comprises a cleaning device 31, a feeding device 32, a manipulator sucking disc 326 capable of being connected with the servo manipulator and a locking device 333 capable of detachably locking and fixing the feeding device 32 and the cleaning device 31, and in order to facilitate centralized management, a tool library 7 capable of placing different types of feeding devices is also arranged on the base of the embodiment.

In order to further meet the requirement of automation, the feeding device 32 in this embodiment includes a first plate 321, a second plate 322, a partition 323, a linear driving device for partition, and a plurality of feeding hoppers 324; the lower parts of the plurality of charging hoppers 324 are respectively fixedly arranged on the first plate body 321, and a first discharging opening is arranged on the first plate body 321 corresponding to the plurality of charging hoppers 324; the second plate body 322 is arranged below the first plate body 321 and is fixedly connected with the first plate body 321, and a second blanking opening is arranged on the second plate body 322 at a position corresponding to the first blanking opening; a cavity matched with the thickness of the partition plate 323 is arranged between the first plate 321 and the second plate 322, and the partition plate 323 is arranged in the cavity and can penetrate or isolate the first blanking port from the second blanking port under the driving of the linear driving device of the partition plate. The feeding hopper 324 in this embodiment is a 3D printing feeding hopper, and the feeding hopper 324 is composed of an arc opening 3241, a material containing cavity 3242, a hopper base 3243 and a die cavity diversion port 3244, and is used for storing mixed materials and receiving main materials and auxiliary materials of a material weighing machine. The loading hopper 324 has a thickness of 1.2-2mm and is printed with PLA or ABS. The 3D loading hopper 324 is provided with a hopper base 3243 with a profile bottom shape which is outwards offset by a certain distance, and 10% -30% of honeycomb PLA or ABS is filled in the hopper base 3243. The upper surface of the upper hopper 324 is provided with an arc-shaped opening 3241 which is outwards lofted for a certain distance and is consistent with the outline shape, the arc-shaped opening is used for receiving materials and preventing the materials from running, and the lower surface of the hopper base 3243 is provided with a die cavity flow guide opening 3244, so that the mixture is conveniently discharged into a die.

The locking device 33 in the present embodiment includes a base plate 331 and a movable frame 332; the upper plane of the bottom plate 331 is provided with a manipulator sucker 326 which can be fixedly connected with a manipulator. One end of the bottom plate 331 is fixedly connected with the frame body of the cleaning device 31, two first rotary cylinders 3311 are arranged on the bottom plate 331, cylinder rotating shafts 31212 of the two first rotary cylinders 3311 penetrate through the bottom plate 331 to extend downwards, and first pressing sheets 3312 are arranged on the cylinder rotating shafts 31212; the baffle linear driving device is arranged at the lower part of the bottom plate 331, and the moving end of the baffle linear driving device is fixedly connected with a moving frame 332 arranged below the bottom plate 331; the moving frame 332 is provided with two second rotary cylinders 3321, cylinder rotating shafts 31212 of the two second rotary cylinders 3321 extend downwards through the moving frame 332, and a second pressing sheet 3322 is arranged at the upper part thereof; the first plate 321 is mounted at the lower part of the bottom plate 331 and is compressed or released by two first compression sheets 3312, the partition 323 is arranged below the movable frame 332 and is compressed or released by two second compression sheets 3322, a first positioning device is arranged between the first plate 321 and the bottom plate 331, and a second positioning device is arranged between the partition 323 and the movable frame.

The first positioning device and the second positioning device of the present invention may be various positioning forms in the prior art, but in consideration of the simple structure and the better power transmission, the first positioning device of the present embodiment includes four protrusions provided on the bottom plate 331 and four positioning holes provided on the first plate 321, and the second positioning device includes two protrusions provided on the moving frame 332 and two positioning holes provided on the partition 323.

The linear driving device for the partition plate in the present invention may be a common means in the prior art such as a screw assembly and a hydraulic cylinder, but in this embodiment, the linear driving device for the partition plate is a linear cylinder 325 in order to make the space more compact.

To meet the requirement of the automation line, the cleaning device 31 of the present embodiment includes a cleaning frame 311, a cleaning assembly 312, and a cleaning driving device 313; the cleaning drive device 313 is fixedly mounted on the cleaning frame body 311 and can drive the cleaning head in the cleaning assembly 312 to rotate.

In this embodiment, there are two cleaning heads 3121, the cleaning head 3121 includes a disc-shaped cleaning disc 31211 and a rotating shaft 31212 fixedly connected with the cleaning disc 31211, the rotating shafts 31212 of the two cleaning heads 3121 are oppositely and coaxially rotatably installed at the upper and lower sides of the cleaning frame 311, and two ends of an output shaft 3131 of the cleaning driving device 313 are respectively fixedly connected with the two rotating shafts 31212. The brush 31213 is implanted on the surface of the sweeping disc 31211 facing away from the rotating shaft 31212 in the embodiment, the brush 31213 is implanted into the sweeping disc 31211 in a circular radius mode (6-9 are in a group), and the brushes are uniformly distributed in the circumferential direction (24-36 groups are uniformly distributed), so that the sweeping of the grinding tool is facilitated.

In this embodiment, the cleaning drive device 313 includes a pneumatic motor 3132 and a speed reducer. The air motor 3132 may reduce space requirements and provide a low speed, high torque sweep.

In this embodiment, the cleaning device 31 is further provided with a release agent nozzle 327. The two release agent nozzles 327 are respectively arranged on the upper side and the lower side of the cleaning frame body 311 at the front side of the speed reducer, the two release agent nozzles 327 are communicated with a release agent tank (not shown in the figure) through hoses, and release agents can be sprayed to the upper die and the lower die of the brake pad hot press 6 through the release agent nozzles 327 after cleaning.

As described above, in the brake block mold feeding and cleaning device 31 of the present embodiment, when the feeding device 32 is installed, the positioning hole 3211 on the first plate 321 is sleeved on the protrusion 3313 on the bottom plate 331, then the positioning hole 3231 on the partition 323 is sleeved on the protrusion 3323 on the movable frame 332, and the first rotary cylinder 3311 and the second rotary cylinder 3321 are started to respectively press the first plate 3312 on the lower plane of the bottom plate 331, and the second press plate 3322 presses the partition 323 on the lower plane of the movable frame 332, so that the process is reversed when the feeding device 32 needs to be removed.

In this embodiment, the brake block mold feeding cleaning device 31 receives materials through the feeding hopper 324, the separator 323 is controlled by the linear cylinder 325 to realize blanking and stopping, and the cleaning head 3121 is started to clean dust on the surface of the mold through the pneumatic motor 3132, meanwhile, the mold release agent nozzle 327 is also arranged to directly spray the mold release agent on the upper mold and the lower mold after cleaning is finished, so that the labor intensity and the working environment are reduced, an effective mode is provided for cleaning, blanking and spraying the mold release agent of the mold, the quality instability problem caused by manual operation is avoided, the configuration efficiency is improved, the labor intensity is reduced, and the method is suitable for wide popularization and application.

Example 2

As shown in fig. 23, the difference between the present embodiment and embodiment 1 is that six brake pad hot presses are provided, three mixing and stirring weighing machines are provided, and the six brake pad hot presses are circumferentially arranged and mounted on the support base with the servo manipulator as a center.

In conclusion, the multi-station hot-pressing system for the brake pad can improve efficiency, save manpower and reduce cost of the brake pad. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. The present invention is capable of modifications in the foregoing embodiments, as obvious to those skilled in the art, without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (8)

1. The multi-station hot pressing system for the brake pad is characterized by comprising a supporting base, a servo manipulator, a die feeding device, at least one mixing and stirring weighing machine and at least one hot pressing machine for the brake pad; the brake block hot press is arranged on the supporting base, the mixing stirring weighing machine is arranged above the side of the brake block hot press, the servo manipulator is arranged beside the brake block hot press, the die feeding device is arranged on the servo manipulator, and the die feeding device can take out and put the mixed friction materials in the mixing stirring weighing machine into a die cavity of each brake block hot press under the drive of the servo manipulator;

the mixing stirring weighing machine comprises a weighing frame body, a mixing stirring device, a coarse and fine adding auger and a weighing control system; the mixing and stirring device is arranged on the weighing frame body, a feeding port is arranged at the upper part of the mixing and stirring device, and a discharging port is arranged at the lower part of the mixing and stirring device; the mixing and stirring device comprises a stirring bin, a stirring main shaft, a stirring driving device, a turnover limiting device and a plurality of stirring units; the material inlet is arranged at the upper part of the stirring bin, and the material outlet is arranged at the lower part of the stirring bin; the feeding hole of the coarse and fine adding auger is rigidly and fixedly connected with the discharging hole of the mixing and stirring device; the stirring main shaft is rotatably arranged on the stirring bin, and one end of the stirring main shaft extends out of the stirring bin; the stirring driving device and the overturning driving device are respectively and fixedly arranged on the weighing frame bodies on two sides of the stirring bin, and an output shaft of the stirring driving device is fixedly connected with the extending end of the stirring main shaft; the overturning main shaft of the overturning driving device is coaxially arranged with the stirring main shaft and fixedly connected with the stirring bin; the stirring main shafts and the overturning main shafts on two sides of the stirring bin are also respectively arranged on the weighing frame body through supporting bearing parts; the stirring units are arranged on the stirring main shaft in the stirring bin; the overturning limiting device is fixedly arranged on the stirring bin and can limit and stop the stirring bin when the feeding port is overturned to be in butt joint with the feeding position;

The coarse and fine screw conveyer comprises a shell, a transmission assembly, a screw conveyer driving device, a first screw conveyer group and a second screw conveyer group; the feeding end of the shell is provided with a feeding hole, the discharging end of the shell is provided with auger barrels with the number matched with that of the augers, the axes of the auger barrels are parallel, the inner cavities of the auger barrels are mutually independent, and each auger barrel is provided with a discharging hole; the augers in the first auger set and the second auger set are respectively rotatably arranged in the corresponding auger barrels, and the first shaft ends positioned on the same side of each auger extend out of the shell; the transmission assembly can only drive the augers in the first auger set to rotate when the auger driving device rotates forwards, and only drive the augers in the second auger set to rotate when the auger driving device rotates reversely;

The die feeding device comprises a cleaning device, a feeding device, a manipulator sucker capable of being connected with the servo manipulator and a locking device capable of detachably locking and fixing the feeding device and the cleaning device.

2. The multi-station hot pressing system of a brake pad according to claim 1, wherein the transmission assembly comprises a driving gear fixedly arranged on an output shaft of the auger driving device, a plurality of one-way bearings respectively and correspondingly arranged on each first shaft end, and a driven gear correspondingly arranged on each one-way bearing; the driving gear is meshed with one or more of the driven gears; a storage bin is fixedly arranged at the discharge end of the shell, the discharge ports on the auger barrels are communicated with the storage bin, a discharging port is arranged at the lower part of the storage bin, and a plugboard capable of opening or closing the discharging port by linear movement is arranged on the discharging port; the plugboard is driven by the plugboard linear movement driving device; the discharging port of the storage bin is communicated with the secondary storage bin, a first discharging port is formed in the bottom of the secondary storage bin, and a first door plate driving device capable of opening or closing the first door plate are arranged on the first discharging port; the weighing control system comprises a weighing sensor and a controller, wherein the weighing sensor is used for weighing materials in the secondary storage bin; the weighing sensor is electrically connected with the controller, and the controller is electrically connected with the plugboard linear movement driving device, the auger driving device and the first door plate driving device respectively.

3. The multi-station hot pressing system for brake pads according to claim 2, wherein the mixing and stirring weighing machine further comprises a receiving device; the material receiving device comprises a material receiving frame body, a supporting plate, a left-right linear movement driving device, a front-back linear movement driving device, a waste box and a plurality of material receiving boxes, wherein the waste box is fixedly arranged on the material receiving frame body, the material receiving boxes are fixedly arranged on the supporting plate, and the material receiving frame body can be arranged on the material weighing frame body in a front-back linear movement manner and can be driven by the front-back linear movement driving device to linearly move along the front-back direction; the supporting plate can move linearly left and right and is arranged on the material receiving frame body and can move linearly left and right under the drive of the left and right linear movement driving device; the receiving box comprises a box body, a box cover and a box cover opening and closing driving device, wherein the box cover is arranged at the opening of the lower part of the box body, and the left-right linear movement driving device, the front-back linear movement driving device and the box cover opening and closing driving device are electrically connected with the controller.

4. The multi-station hot pressing system of the brake block according to claim 2, wherein the mixing stirring weighing machine further comprises a feeding device, the feeding device comprises a vertical lifting driving device, a charging basket placing platform and a vertical lifting device, the vertical lifting device is correspondingly arranged on the weighing frame body on one side of the mixing stirring device, the charging basket placing platform is fixedly connected with a movable lifting end of the vertical lifting device, and the vertical lifting driving device drives the movable lifting end to drive the charging basket placing platform to vertically move up and down between a lower discharging position and an upper charging position; the size of the feed opening on the stirring bin is larger than the overall size of the charging basket, a charging basket chamber capable of accommodating the charging basket is arranged on the upper side of the inside of the stirring bin, and a stop part for stopping the charging basket from entering the stirring chamber is arranged between the charging basket chamber and the stirring chamber at the lower part.

5. The multi-station hot pressing system for the brake pads according to claim 4, wherein a transition platform for smoothly connecting the basket placing platform with the feeding port is further arranged at the feeding position on the mixing and stirring weighing machine, and a plurality of rollers are arranged on the table top of the transition platform and the basket placing platform.

6. The multi-station hot pressing system of a brake pad according to claim 1, wherein the brake pad hot press comprises a machine body, an upper die part, a middle die part, a lower die part, a guiding device, a main hydraulic cylinder and at least two auxiliary hydraulic cylinders; the lower part of the machine body is provided with a base, the upper part of the machine body is provided with an upper die fixing seat, and the upper die fixing seat is fixedly connected with the base through a support column; the upper die part is fixedly arranged on the upper die fixing seat, the cylinder body of the main hydraulic cylinder and the cylinder body of the auxiliary hydraulic cylinder are fixedly arranged on the base, the end parts of piston rods of the main hydraulic cylinder vertically extend upwards and are fixedly connected with the lower die part, and the end parts of piston rods of the at least two auxiliary hydraulic cylinders also vertically extend upwards and are fixedly connected with the middle die part arranged above the lower die part; a male die is fixedly arranged on the upper side of the lower die part, and a friction material block cavity which penetrates up and down is arranged on the middle die part at a position corresponding to the male die; the guide device comprises at least two guide posts which are fixedly connected with the middle die part and vertically extend downwards, guide holes which are arranged on the lower die part and are matched with the guide posts, and stop lifting parts which are equal to the guide posts in number; the lower end of the guide post penetrates through the corresponding guide hole and then is fixedly connected with the lower stop lifting part, and the outer diameter of the stop lifting part is larger than the inner diameter of the guide hole.

7. The multi-station hot pressing system of the brake pad according to claim 1, wherein the feeding device comprises a first plate body, a second plate body, a partition plate linear driving device and a plurality of feeding hoppers; the lower parts of the plurality of feeding hoppers are respectively fixedly arranged on the first plate body, and a first blanking opening is arranged on the first plate body corresponding to the positions of the plurality of feeding hoppers; the second plate body is arranged below the first plate body and fixedly connected with the first plate body, and a second blanking opening is formed in a position, corresponding to the first blanking opening, on the second plate body; the first plate body and be provided with between the second plate body with baffle thickness assorted cavity, the baffle is installed in the cavity and can be under baffle linear drive device's drive with first feed opening with the second feed opening link up or the isolation.

8. The multi-station hot pressing system for brake pads according to claim 7, wherein the locking device comprises a bottom plate and a movable frame; one end of the bottom plate is fixedly connected with a frame body of the cleaning device, two first rotary cylinders are arranged on the bottom plate, cylinder rotating shafts of the two first rotary cylinders penetrate through the bottom plate to extend downwards, and first pressing sheets are arranged on the cylinder rotating shafts; the baffle plate linear driving device is arranged at the lower part of the bottom plate, and the moving end of the baffle plate linear driving device is fixedly connected with the moving frame body arranged below the bottom plate; the movable frame body is provided with two second rotary cylinders, cylinder rotating shafts of the two second rotary cylinders penetrate through the movable frame body to extend downwards, and the upper part of the movable frame body is provided with a second pressing sheet; the first plate body is installed in the lower part of bottom plate to compress tightly or release through two first preforming, the baffle sets up remove the support body below and compress tightly or release through two second preforming, first plate body with be provided with first positioner between the bottom plate, the baffle with remove and be provided with second positioner between the support body.