CN112045921B - Separable feeding device for hot press molding of drum brake pad - Google Patents

Abstract

The invention discloses a separable feeding device for hot press molding of a drum brake pad, which comprises a plurality of hoppers capable of containing powder, opposite door opening mechanisms for controlling opening and closing of material doors and scraper plate retracting and releasing mechanisms for controlling movement of scrapers, wherein the opposite door opening mechanisms are arranged on the hoppers; the opposite door opening mechanism comprises two parallel sliding rods, a plurality of pairs of U-shaped deflector rods and a plurality of pairs of charging door swing rods; the scraper retracting and releasing mechanism comprises a bracket, a push rod, two connecting rods and a sliding block; the push rod is connected to the side surface of the hopper in a sliding manner; the one end of push rod towards the outside is provided with the spout, and wherein one end of two connecting rods is articulated and can follow the spout and slide, and the other end of two connecting rods articulates respectively on the support and on the slider that can slide relative to the support, is fixed with the scraper blade on the slider. The separable feeding device disclosed by the invention can automatically realize the action coordination and coordination operation of feeding, mold release agent spraying and filler scraping among a plurality of hot presses, thereby improving the feeding speed and reducing the operation time; weighing and feeding separation are performed, so that movement interference is avoided, and the working efficiency is improved.

Description

Separable feeding device for hot press molding of drum brake pad

Technical Field

The invention relates to a separable feeding device for hot press molding of a drum brake pad, and belongs to the technical field of machinery.

Background

At present, manual operation or automatic feeding procedures are adopted in the drum brake hot-press forming process, single-machine production is adopted, an automatic production line is not formed, the production efficiency is low, the labor cost is high, and workers work in a high-temperature and high-dust environment and are not beneficial to body health. The feeding mode needs to be improved to realize automatic feeding, improve the feeding speed and avoid movement interference.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a separable feeding device for hot press molding of a drum brake pad, which can realize automatic feeding of a plurality of hot presses during production of the drum brake pad.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a separable feeding device for drum brake pad hot press molding comprises a feeding device, wherein the feeding device comprises a plurality of hoppers with double-leaf material doors, opposite door opening mechanisms for controlling the opening and closing of the double-leaf material doors on all the hoppers and scraper plate retracting and releasing mechanisms for controlling the movement of scrapers;

the opposite door opening mechanism comprises two parallel sliding rods, a plurality of pairs of U-shaped deflector rods and a plurality of pairs of charging door swing rods;

two U-shaped end parts of each U-shaped deflector rod are respectively connected with a charging door swing rod in a sliding manner, and each charging door swing rod is fixedly provided with a charging door; in each pair of U-shaped deflector rods, two material doors of the same hopper are arranged on the swing rods connected with the U-shaped end parts on the same side; in each pair of U-shaped deflector rods, the U-shaped deflector rod close to one end of the slide bar is fixed on the first slide bar and is in sliding connection with the second slide bar, and the U-shaped deflector rod close to the other end of the slide bar is fixed on the second slide bar and is in sliding connection with the first slide bar;

the scraper retracting and releasing mechanism comprises a bracket, a push rod, two connecting rods and a sliding block;

the push rod is connected to the side surface of the hopper in a sliding manner; the one end of push rod towards the outside is provided with the spout, and wherein one end of two connecting rods is articulated and can follow the spout and slide, and the other end of two connecting rods articulates respectively on the support and on the slider that can slide relative to the support, be fixed with the scraper blade on the slider.

Furthermore, two parallel slide bars are provided with return springs.

Further, a return spring is arranged on the push rod.

Furthermore, a bidirectional bin gate cylinder is adopted, thrust towards two sides is applied to a space between two adjacent pairs of U-shaped shift levers in the middle of the plurality of pairs of U-shaped shift levers, and the bin gate on each hopper is controlled to be synchronously opened.

Furthermore, a scraper cylinder is adopted, thrust towards one end of the outer side of the push rod is applied from the other end of the push rod, and the scraper is controlled to slide downwards along the support along with the sliding block.

Further, the bidirectional material door cylinder is arranged on the end clamp.

Further, the squeegee cylinder is provided on the end jig.

Furthermore, the tail end clamp also comprises a clamp body, a guide rod fixed on the clamp body, and a plurality of pairs of parallel clamping plates which can slide along the axial direction of the guide rod;

and a clamping bidirectional cylinder for driving the two clamping plates to move in the same direction or in different directions is correspondingly arranged between each pair of clamping plates.

Further, a spraying mechanism is further arranged on the tail end clamp.

Further, the feeding device is fed by a weighing and feeding system;

the weighing and feeding system comprises a feeding frame body, a material box which is arranged on the feeding frame body and is used for containing powder, a weighing device, a transition hopper and a feeding planker;

weighing the powder in the hopper by a weighing device and putting the powder into a transition hopper;

the transition hopper drops powder into the discharging device which moves to the feeding planker.

The invention achieves the following beneficial effects:

the separable feeding device for the hot press molding of the drum brake pad can automatically realize the action coordination and coordination operation of feeding, mold release agent spraying and filler scraping among a plurality of hot presses, improves the feeding speed and reduces the operation time; weighing and feeding separation are performed, so that movement interference is avoided, and the working efficiency is improved.

Drawings

FIG. 1 weigh feeder system (parts broken away);

FIG. 2 is a discharge apparatus (with parts broken away);

FIG. 3 is a partial front sectional view of the discharging device;

FIG. 4 is a block diagram of the end clamp;

FIG. 5 is a front view of the end clamp;

FIG. 6 shows the discharge apparatus coupled to the end clamp and the end of the discharge operation;

FIG. 7 shows the discharging device in a state of scraping powder;

FIG. 8 the end unit in a state of being loaded with the spacer;

FIG. 9 is an enlarged view of a portion of FIG. 8 at V;

in the figure:

1-a hot press; 103-a lower die holder;

2-weighing and feeding system; 201-a feeding frame body; 202-a material box; 203-weighing device; 204-a transition hopper; 205-feeding dragging device, 20501-V type positioning block; 20502-feed motor; 20503-fixing frame; 20504-synchronous cog belt, 20505-slide block; 20506-feeding planker; 20507-guide rails; 20508-retaining clip;

3-a material discharging device; 301-a hopper assembly; 30101-hopper floor; 30102-hopper; 30103-connecting the plates; 30104-boss; 30105-a connecting strip; 30106-semi-cylindrical positioning block; 30107-standing the plate; 30108-a sleeve; 30109-grid bar; 302-first U-shaped deflector rod; 303-a second U-shaped deflector rod; 304-a third U-shaped deflector rod; 305-a fourth U-shaped deflector rod; 306-a rear slide bar; 307-front sliding bar; 308-a bin gate swing rod; 309-linear bearings; 310-right material gate; 311-left bin gate; 312-a return spring; 313-a fastening screw; 314-set screws; 315-strut seat; 316-strut; 317-a scraper slide block; 318-a connecting shaft; 319-upper link; 320-a lower link; 321-a fixed shaft; 322-scraper pusher; 323-linear bearings; 324-a return spring; 325-pin shaft; 326-a scraper;

4-a separator; 401-cylindrical locating holes;

5-a manipulator;

6-end clamp; 601-a clamp body; 6011-fixing the disc; 6012-a lug; 6013-standing plate; 6014-side panels; 602-a guide bar; 603-splint one; 6031-conical locating pins; 604-Splint two; 605-splint three; 606-clamp plate four; 607-a guide sleeve; 608-fastening screws; 609-clamping a first bidirectional cylinder; 610-clamping a bidirectional cylinder II; 611-a two-way cylinder of the charging door; 612-squeegee cylinder;

7-a spraying mechanism;

8-brake block.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present embodiment, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 9, in this embodiment, operations of feeding, spraying a release agent, leveling a filler, taking out a finished product, filling a separator, and the like of 4 thermocompressors are taken as an example.

The layout of the 4 hot presses can be distributed according to a straight-line type (namely 4 hot presses are arranged on the same line) or a rectangular mode, and considering the defects of long span of a straight-line type distribution truss, long movement time of a manipulator, poor rigidity of the truss, large occupied space and the like, the rectangular distribution is selected in the embodiment, namely the 4 hot presses are divided into two rows which are oppositely arranged in pairs, and the manipulator 5 and the conveyor are arranged on a central symmetry line.

The discharging device 3 mainly comprises a hopper assembly 301, an opposite door opening mechanism and a scraper retracting mechanism, as shown in fig. 2 and 3. The hopper assembly 301 is formed by fixedly connecting a plurality of hoppers 30102 through a hopper bottom plate 30101 into a whole, wherein the number of the hoppers is consistent with the number of the die cavities, the positions of the hoppers correspond to the die cavities, the hoppers are fixedly reinforced through two connecting plates 30103 and a plurality of connecting strips 30105, the hopper bottom plate 30101 is hollowed corresponding to the bottoms of the hoppers, the bottom of each hopper is symmetrically provided with a right material door 310 and a left material door 311, the material doors are fixedly connected with rotating shafts, the rotating shafts are in hinged connection with shaft sleeves 30108 arranged on the hopper bottom plate, one end of each rotating shaft is fixedly connected with a material door swing rod 308 with a waist-shaped groove, the material door swing rods and the door surface of each material door form 130 degrees, and the opening angle of each material door is guaranteed to reach 80 degrees; the bottom of the inner cavity of each hopper 30102 is provided with a wedge-shaped lattice 30109, the bottom surface of which is flush with the lower surface of the hopper bottom plate 30101, as shown in fig. 3, when the two doors of the hopper are closed, the wedge-shaped lattice is flush with the lattice 30109, which not only prevents material leakage, but also limits the blanking speed of the middle part of the hopper.

Bosses 30104 with positioning holes are provided on both left and right sides of each hopper, and the positions and sizes of the bosses are the same as those of the mold partition plates, so that a pair of end clamps 6 can be used to clamp and move a feeding device or a group of partition plates. The four corners of the hopper bottom plate 30101 are provided with semi-cylindrical positioning blocks 30106 corresponding to and matching with the four V-shaped positioning blocks 20501 on the feeding planker 20506 in the weighing and feeding system 2, and when the separable feeding device 3 is placed on the feeding planker 20506, the positioning is performed.

The opposite door opening mechanism consists of a sliding rod, a U-shaped deflector rod and a material door oscillating bar and is used for opening and closing the material door. The rear sliding rod 306 and the front sliding rod 307 are slidably mounted on two connecting plates 30103 through a linear bearing 309, the first U-shaped deflector rod 302 and the third U-shaped deflector rod 304 are fixedly connected with the rear sliding rod 306 through a fastening screw 313, meanwhile, the first U-shaped deflector rod 302 and the third U-shaped deflector rod 304 are also sleeved on the front sliding rod 307 to form a sliding connection, and the rear sliding rod 306 drives the first U-shaped deflector rod 302 and the third U-shaped deflector rod 304 to slide relative to the hopper assembly 301; similarly, the second U-shaped shift lever 303 and the fourth U-shaped shift lever 305 are fixedly connected with the front sliding rod 307 through a fastening screw 314 and are slidably connected with the rear sliding rod 306, and pin shafts at two ends of each U-shaped shift lever are respectively inserted into the waist-shaped grooves of the bin gate swing rods 308 to form a sliding connection. And return springs 312 are respectively arranged at the left end of the rear sliding rod 306 and the right end of the front sliding rod 307, when a pushing force F1 is simultaneously applied to the left and right sides of the second U-shaped deflector rod 303 and the third U-shaped deflector rod 304 from the center through a bin gate bidirectional cylinder arranged on the tail end clamp 6, the third U-shaped deflector rod 304 drives the rear sliding rod 306 and the first U-shaped deflector rod 302 to move rightwards together, so that the bin gate swing rod 308 is pushed to swing, the left bin gate 311 is opened, and similarly, the second U-shaped deflector rod 303 drives the front sliding rod 307 and the fourth U-shaped deflector rod 305 to move leftwards together, and the right bin gate 310 is opened. When the piston rod of the two-way cylinder of the charging door retracts simultaneously, the opposite door opening mechanism resets under the action of the return spring 312, and the charging door is closed.

The scraper retracting mechanism comprises a swing rod and slide block mechanism which is composed of a push rod, a connecting rod, a slide block, a scraper and the like and is used for retracting or releasing the scraper. The two support columns 316 are vertically and parallelly installed at the right end of the hopper bottom plate 30101 through a support column seat 315, the scraper sliders 317 are slidably connected with the support columns 316, one end of the lower connecting rod 320 is hinged with a connecting shaft 318 fixed on the two scraper sliders 317, one end of the upper connecting rod 319 is hinged with a fixed shaft 321 fixed at the upper end of the support columns, and the other ends of the lower connecting rod 320 and the upper connecting rod 319 are hinged through a pin shaft 325. The vertical plate 30107 is fixed on the hopper bottom plate 30101, the linear bearing 323 is fixedly installed at the upper end of the vertical plate 30107, the scraper push rod 322 is in sliding connection with the linear bearing 323, a waist-shaped groove is formed at the right end of the scraper push rod 322, the pin shaft 325 penetrates through the waist-shaped groove to be in sliding connection with the scraper push rod 322, when a scraper cylinder arranged on the tail end clamp 6 extends out, force F2 is applied to the left end of the scraper push rod 322 rightwards, so that the sliding block 317 moves downwards, the scraper 326 vertically installed on the sliding block 317 is driven to extend downwards for a certain distance, and the mechanism has the characteristic of travel multiplication, and can enable the scraper to move quickly and with a large travel. The scraping surface of the scraping plate 326 is in a concave arc shape and is matched with the outer arc surface of the brake pad, and the manipulator 5 drives the separable feeding device 3 to ensure that the scraping plate 326 extends into the mold cavity to a certain depth and moves left and right to complete the operation of scraping powder in the mold cavity. The spring 324 is used to return and retract the scraper 326.

In this embodiment, the bidirectional material gate cylinder 611 is adopted to apply thrust forces F1 and-F1 facing to both sides in the space between two adjacent pairs of U-shaped shift levers in the middle of the plurality of pairs of U-shaped shift levers, so as to control the material gate on each hopper to be opened synchronously.

The scraper cylinder 612 is used for applying a pushing force F2 towards one end of the outer side of the push rod from the other end of the push rod, and the scraper is controlled to slide downwards along the bracket along with the slide block.

The bidirectional material door cylinder 611 and the scraper cylinder 612 are arranged on the end clamp 6. The end clamp 6 is provided on the robot arm 5.

As shown in fig. 4 and 5, the end clamp 6 is also provided with a spraying mechanism 7 for spraying a release agent.

The end clamp 6 mainly comprises a clamp body 601, a guide rod 602, a clamping plate and an air cylinder. The two guide rods 602 are respectively fixed on lugs 6012 on the front side and the rear side of the clamp body 601 by fastening screws 608, the first clamping plate 603, the second clamping plate 604, the third clamping plate 605 and the fourth clamping plate 606 are in sliding connection with the guide rods 602 through guide sleeves 607 fixed on the first clamping plate 603, the second clamping plate 604 and the third clamping plate 605, the cylinder body of the first clamping bidirectional cylinder 609 is fixedly connected with the clamp body 601, the head of the piston rod is respectively fixedly connected with the first clamping plate 603 and the second clamping plate 604, the first clamping plate 603 and the second clamping plate 604 are a first group of clamping plates and used for clamping a group of hoppers or mold clapboards, a conical positioning pin 6031 arranged on the clamping plates is matched and positioned with a cylindrical positioning hole corresponding to an boss 30104 on the hopper assembly 301 or a cylindrical positioning hole of the mold clapboard, and when the first clamping bidirectional cylinder 609 works, the piston rod can be retracted or extended out simultaneously, so that the first clamping plate 603 and the second clamping plate 604 are driven to realize clamping action or loosening action; similarly, the cylinder body of the clamping bidirectional cylinder II 610 is fixedly connected with the clamp body 601, the head of the piston rod is fixedly connected with a clamp plate III 605 and a clamp plate IV 606 respectively, the clamp plate III 605 and the clamp plate IV 606 are second groups of clamping plates, the number of the groups of the clamping plates is consistent with the number and the size of the groups of the hoppers or the mold clapboards, and the clamping plates of all the groups can simultaneously complete clamping or loosening actions.

The cylinder body of the two-way cylinder 611 of the bin gate is fixedly connected to the bottom of the clamp body 601, the two piston rods are in a free state, when the clamping hopper assembly 301 of the end clamp 6 moves to the upper side of the lower die holder to feed, the two piston rods extend out simultaneously, the second U-shaped driving rod 303 and the third U-shaped driving rod 304 are respectively pushed, the bin gate is opened, and the two piston rods retract simultaneously after feeding is finished.

The cylinder body of the scraper cylinder 612 is fixedly connected to the vertical plate 6013 of the clamp body 601, the piston rod of the scraper cylinder 612 is in a free state, and when the filler needs to be scraped and leveled, the piston rod of the scraper cylinder 612 extends out to push the scraper push rod 322 to move rightwards, so that the scraper 326 extends downwards, and retracts after the filler is scraped and leveled.

The fixed disc 6011 on the fixture body 601 is used for fixedly connecting the end fixture 6 with the rotating disc 56131 of the rotating cylinder 5613 on the manipulator 5, so that the manipulator 5 drives the end fixture 6 to move, and operations of feeding, spraying release agent, feeding, scraping, taking out finished products and filling partition plates of each hot press are realized.

The powder in the hopper of the feeding device 3 is weighed and fed by the weighing and feeding system 2. The weighing and feeding system 2 is used for weighing powder required by molding each brake pad and adding the powder into each hopper, and mainly comprises a feeding frame body 201, a material box 202, a weighing device 203, a transition hopper 204 and a feeding dragging device 205, as shown in fig. 1.

Feeding planker 20506 is fixed connection with two guide rails 20507, four sliders 20505 are fixed on feeding frame body 201, the guide rails are connected with the sliders in a sliding manner, feeding motor 20502 is fixed on feeding frame body 201 through fixing frame 20503, feeding planker 20506 is fixed connection with synchronous toothed belt 20504 through fixing clamp 20508, feeding planker 20506 is also fixedly provided with four V-shaped positioning blocks 20501 for positioning feeding device 3 placed thereon, so as to ensure that terminal clamp 6 can accurately clamp separable feeding device 3. The feeding motor 20502 can drive the feeding carriage 20506 and drive the discharging device 3 to move along the Y1 axis through the synchronous cog belt 20504, so as to sequentially feed materials into each discharging hopper of the discharging device 3, and move the discharging device 3 to the clamping position at the rightmost end after the feeding is finished, so that the tail end clamp 6 can be clamped to the discharging device 3 without interference.

The working process of the production line is as follows:

for convenience of description, it is assumed that the hot press at the right front is a first hot press and the hot press at the left front is a second hot press.

S1, the weighing and feeding system 2 pushes out the weighed and fed discharging device 3 to stay at the rightmost clamping position.

S2, the manipulator 5 drives the tail end clamp 6 to move to the position right above the emptying device 3, two groups of clamping plates of the tail end clamp 6 are opened under the driving of a bidirectional cylinder, the manipulator 5 descends, and when a conical positioning pin 6031 arranged on the clamping plates is aligned with a cylindrical positioning hole of an upper boss 30104 on the hopper assembly 301, the clamping bidirectional cylinder retracts to enable the two groups of clamping plates to clamp the separable feeding device 3, as shown in figure 6.

S3, after the manipulator 5 ascends and is separated from the feeding planker 20506, the feeding device 3 is clamped to move, and the separable feeding device 3 is moved to the upper left of the first hot press.

And S4, when the heat preservation and pressure maintaining of the first hot press are finished, the multilayer hot press mold of the hot press is opened, and the partition plate at the lowest part and the pressed brake pad 8 are pushed out together from the lower part to vacate a space.

And S5, the manipulator drives the tail end clamp 6 to move, and the spraying mechanism 7 on the tail end clamp 6 sprays the release agent on the die cavity and the partition board 4 on the surface. Then, the discharging device 3 is arranged right above the lower die holder 103 of the hot press, so that each hopper is aligned with the corresponding lower die holder cavity.

S6, the two piston rods of the two-way air cylinder 611 of the bin gate extend out simultaneously to push the second U-shaped deflector rod 303 and the third U-shaped deflector rod 304 respectively, and the bin gate is opened through the opposite door opening mechanism for feeding, as shown in FIG. 6. After the feeding is finished, the two piston rods retract simultaneously, and the bin gate is reset under the action of the reset spring 312.

S7, the manipulator 5 rises for a certain distance, the scraper cylinder 612 works, the piston rod of the scraper cylinder pushes the scraper push rod 322 rightwards, the scraper 326 is driven by the scraper retraction jack to extend downwards, as shown in FIG. 7, then the manipulator 5 moves leftwards to the middle part of the rightmost cavity, the manipulator 5 moves downwards to a set scraping height, the manipulator 5 moves rightwards to the inner wall of the right side of the cavity first and then moves leftwards reversely to the inner wall of the left side of the cavity, and the scraper 326 scrapes the powder in the cavity. And the manipulator 5 is lifted upwards again, moves to the next row of cavities, repeats the scraping action and scrapes the powder in each row of cavities in sequence. The squeegee cylinder 612 piston rod then retracts, retracting the squeegee 326 to the reset position under the action of the return spring 324.

And S8, moving the manipulator 5, returning the emptied discharging device 3 to the clamping position of the weighing and feeding system 2, then simultaneously extending piston rods at two ends of the first clamping bidirectional cylinder 609 and the second clamping bidirectional cylinder 610, releasing the separated feeding device 3, and stopping on the weighing and feeding system 2.

And S9, the manipulator moves to drive the vacant tail end clamp 6 to move to a position right above the brake pad pushed out by the hot press, then the empty tail end clamp descends to enable the lower ends of the two groups of clamping plates to be lower than the upper surface of the brake pad, and the manipulator 5 sequentially pushes the brake pads pressed in each row to a conveyor to be conveyed to the subsequent process.

S10, the manipulator 5 moves the empty end clamp 6 to the position right above the partition plate group pushed out by the first hot press, then descends to the position where the conical positioning pin 6031 on the clamping plate is aligned with the cylindrical positioning hole 401 arranged on the end face of the partition plate 4, as shown in figure 9, the two clamping bidirectional cylinders 609 and 610 act to clamp the partition plate 4, then the manipulator 5 moves the partition plate 4 to the position right above the mold cavity of the first hot press so that each partition plate is aligned with the corresponding mold cavity, the manipulator 5 descends to clamp the lower end of the partition plate in the mold cavity of the lower mold base 103 of the first hot press, as shown in figure 8, the last two clamping bidirectional cylinders are loosened, the partition plate falls onto the scraped powder in the mold cavity, and the manipulator 5 returns to the weighing and feeding system 2 to wait for next material taking.

And S11, pressing by a first hot press, preserving heat and pressure, and entering the next cycle.

S12, after S8 is completed, the weighing and feeding system 2 moves the discharging device 3 to the left under the driving of the feeding dragging device 205, so that the leftmost hopper of the discharging device 3 is aligned with the transition hopper 204 of the weighing and feeding system 2, the weighed powder material is fed into the leftmost hopper, the discharging device 3 is continuously moved to the left by one hopper row distance, the next row of hoppers is aligned with the transition hopper 204, feeding is carried out, and after all feeding is completed, the feeding dragging device 205 moves the discharging device 3 to the right to a clamping position. The operation of the first press is completed.

S13, the manipulator 5 moves the feeding device 3 after feeding to a second hot press, and different from the operation of the first hot press, the manipulator 5 rotates 180 degrees, and the tail end clamp 6 is turned around, so that the spraying mechanism 7 and the scraper blade retracting mechanism are positioned at the outer side, and for the second hot press, the spraying mechanism 7 and the scraper blade retracting mechanism are positioned at the left side.

And S14, after the heat preservation and pressure maintaining of the second hot press are finished, sending a signal by the control system, and carrying out automatic spraying, feeding, scraping, finished product taking and partition plate filling operations on the second hot press, wherein the action process is the same as that of the steps S4-S11.

And S15, operating the other two hot presses respectively in the same way as the first hot press and the second hot press, and setting the moving directions and parameters in the control system in advance.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (9)

1. A separable feeding device for drum brake pad hot press molding is characterized by comprising a feeding device, wherein the feeding device comprises a plurality of hoppers with double-leaf material doors, opposite door opening mechanisms for controlling the opening and closing of the double-leaf material doors on all the hoppers and a scraper plate retracting mechanism for controlling the movement of a scraper plate;

the opposite door opening mechanism comprises two parallel sliding rods, a plurality of pairs of U-shaped deflector rods and a plurality of pairs of charging door swing rods;

two U-shaped end parts of each U-shaped deflector rod are respectively connected with a charging door swing rod in a sliding manner, and each charging door swing rod is fixedly provided with a charging door; in each pair of U-shaped deflector rods, two material doors of the same hopper are arranged on the swing rods connected with the U-shaped end parts on the same side; in each pair of U-shaped deflector rods, the U-shaped deflector rod close to one end of the slide bar is fixed on the first slide bar and is in sliding connection with the second slide bar, and the U-shaped deflector rod close to the other end of the slide bar is fixed on the second slide bar and is in sliding connection with the first slide bar;

the scraper retracting mechanism comprises a support, a scraper push rod, an upper connecting rod, a lower connecting rod, a scraper sliding block and a scraper;

the two support columns are vertically and parallelly arranged at the right end of the hopper bottom plate through support column seats, the scraper blade sliding blocks are connected with the support columns in a sliding mode, one end of the lower connecting rod is hinged with a connecting shaft fixed on the two scraper blade sliding blocks, one end of the upper connecting rod is hinged with a fixed shaft fixed at the upper ends of the support columns, and the other ends of the lower connecting rod and the upper connecting rod are hinged through pin shafts; the vertical plate is fixed on the bottom plate of the hopper, a linear bearing is fixedly mounted at the upper end of the vertical plate, the scraper push rod is connected with the linear bearing in a sliding mode, a waist-shaped groove is formed in the right end of the scraper push rod, a pin shaft penetrates through the waist-shaped groove and is connected with the scraper push rod in a sliding mode, when a scraper cylinder arranged on the tail end clamp stretches out, thrust is applied to the left end of the scraper push rod rightwards, and therefore the scraper slide block moves downwards, and a scraper vertically mounted on the scraper slide block is driven to stretch out for a certain distance downwards.

2. The separable feeding device for hot briquetting of drum brakes as claimed in claim 1, wherein the two parallel slide bars are provided with return springs.

3. The separable feeding device for drum brake hot press molding according to claim 1, wherein the scraper pusher is provided with a return spring.

4. The separable feeding device for hot press forming of drum brakes as claimed in claim 1, wherein a bidirectional gate cylinder is used to apply a thrust force towards both sides in the space between two adjacent pairs of U-shaped levers among the pairs of U-shaped levers, so as to control the gates of each hopper to open synchronously.

5. The separable feeding device for hot briquetting of drum brakes as claimed in claim 1, wherein a scraper cylinder is used to apply a pushing force from the other end of the push rod toward the outer end of the push rod, and the scraper is controlled to slide down along the strut with the scraper slider.

6. The separable feeding device for hot briquetting of drum brakes according to claim 4, wherein said bidirectional gate cylinder is provided on the end clamps.

7. The separable feeding device for hot press forming of the drum brake lining as claimed in claim 6, wherein the end clamp further comprises a clamp body, a guide rod fixed to the clamp body, and a plurality of pairs of parallel clamping plates axially slidable along the guide rod;

and a clamping bidirectional cylinder for driving the two clamping plates to move in the same direction or in different directions is correspondingly arranged between each pair of clamping plates.

8. The separable feeding device for hot briquetting of drum brakes as claimed in claim 7, wherein said end clamps are further provided with spraying means.

9. The separable feeding device for hot press forming of the drum brake pad according to claim 1, wherein the discharging device is charged by a weighing and charging system;

the weighing and feeding system comprises a feeding frame body, a material box which is arranged on the feeding frame body and is used for containing powder, a weighing device, a transition hopper and a feeding planker;

weighing the powder in the hopper by a weighing device and putting the powder into a transition hopper;

the transition hopper drops powder into the discharging device which moves to the feeding planker.

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