CN117382075B - Hot-press forming die for drum brake pad - Google Patents

Abstract

The invention discloses a hot-press forming die of a drum brake pad, which relates to the field of brake pads and comprises a frame and a die cavity plate arranged on the frame in a sliding manner, wherein a plurality of die cavities are formed in the die cavity plate, and a feeding plate is arranged on the frame in a sliding manner; be provided with a plurality of transfer grooves that are used for keeping in the raw materials on the loading board, it is provided with the baffle to slide on the loading board, the baffle has and is used for with the first position of transfer groove export shutoff and be used for with the second position that transfer groove exit was opened. According to the hot-press forming die for the drum brake pad, the outlets of the transfer grooves are moved to the positions above the openings of the cavities, and then the baffle is pulled, so that the baffle is transferred from the first position to the second position, the outlets of the transfer grooves are synchronously opened, raw materials in the transfer grooves can be simultaneously added into the cavities, the adding efficiency of the raw materials is improved, and the overall hot-press forming efficiency is improved.

Description

Hot-press forming die for drum brake pad

Technical Field

The invention relates to the field of brake pads, in particular to a hot press forming die of a drum brake pad.

Background

It is known to hot press a mould in which a heated material (or heated during pressing) is placed and then subjected to high pressure to form it in the mould. The mold may be single or multi-cavity, and products of different shapes and sizes may be produced as desired, with the molded material being cooled in the mold to solidify and maintain the desired shape and configuration.

For example, the patent document with the name of "a drum brake pad hot press forming mold and process" has the authority publication number of CN108162478A and the authority date of 2018-06-15, and includes an upper mold, a lower mold, and a mold cavity, wherein the upper mold: comprises a template and a plurality of concave dies which are fixed on the bottom end surface of the upper template and are used for forming the outer cambered surface of the friction block; a mold cavity: the die comprises a die cavity plate provided with a plurality of die cavities for forming friction block parts of the brake block and guide sleeves positioned at two ends of the die cavity plate, wherein the lower end face of the die cavity plate is a lower cambered surface which is bent downwards and can be attached to the upper cambered surface of the shoe, the die cavities are in one-to-one correspondence with the female dies, the length and width dimensions of the single die cavity are the same as those of the friction block of the drum brake block, and a plurality of holes for placing heating wires or heating rods are formed in the wall of the die cavity; and (3) lower die: the friction block comprises a lower die plate, guide posts which are fixed at two ends of the lower die plate and matched with guide sleeves on a die cavity, and a plurality of shoe positioning blocks which are positioned on the upper end face of the lower die plate, correspond to the die cavities one by one and are used for fixing shoes, after the upper die plate moves downwards and is matched with the die cavity plates, gaps between the lower cambered surface of a female die, the upper cambered surface of the shoes and two side faces in the die cavities form friction blocks of a drum brake block, and meanwhile, equipment is heated in the friction block forming process, so that the friction blocks are combined with the shoes better, and the drum brake block is formed by one-step compression.

In the prior art, the defects of the prior art including the patent are that as a plurality of cavities are arranged on the die cavity plate, after each molding is finished, brake block raw materials need to be added into the plurality of die cavities one by one, and obviously, the overall efficiency of hot press molding is reduced by one adding the brake block raw materials one by one.

Disclosure of Invention

The invention aims to provide a hot press forming die for a drum brake pad, which aims to solve the defects in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

the hot-press forming die for the drum brake pad comprises a frame and a die cavity plate which is arranged on the frame in a sliding manner, wherein a plurality of die cavities are formed in the die cavity plate, and a feeding plate is arranged on the frame in a sliding manner; be provided with a plurality of transfer grooves that are used for keeping in the raw materials on the loading board, the loading board is inside to be provided with smooth chamber, baffle and smooth chamber sliding connection, the baffle has be used for with the first position of transfer groove export shutoff and be used for with the second position that transfer groove exit was opened.

According to the hot-press forming die of the drum brake pad, the sliding holes are formed in the feeding plate, the baffle is arranged in the sliding holes in a sliding mode, a plurality of through holes are formed in the baffle, and the through holes are arranged in one-to-one correspondence with the outlets of the transfer grooves.

The hot press forming die of the drum brake block comprises a frame, wherein a sliding frame is fixedly connected to the frame, a feeding plate is connected with the sliding frame in a sliding mode, a first spring is arranged between the baffle and the side wall of the sliding hole, a first abutting block is fixedly connected to the baffle, a second abutting block is arranged on the sliding frame and located on the moving stroke of the first abutting block, a channel for the first abutting block to pass through is formed in the feeding plate, and a power assembly for driving the feeding plate to reciprocate is further arranged on the sliding frame.

The hot press forming die of the drum brake pad comprises a power assembly and a first gear connected with the output end of the driving motor, wherein a first toothed plate is arranged on the feeding plate, the driving motor is arranged on the sliding frame, and the first gear is meshed with the first toothed plate.

According to the hot-press forming die of the drum brake pad, the middle rotary groove is provided with the opening.

According to the hot-press forming die for the drum brake pad, the sealing piece used for preventing raw materials from falling on the upper surface of the die cavity plate is arranged on the feeding plate.

The sealing piece comprises a sealing plate and a connecting pipe, wherein a plurality of connecting pipes are arranged above the sealing plate, a plurality of connecting pipes are correspondingly arranged with the outlets of the transfer grooves, a plurality of connecting pipes are in sliding connection with the feeding plate, and a second spring is arranged between the sealing plate and the feeding plate.

According to the hot-press forming die of the drum brake pad, the sealing plate is provided with the wedge-shaped part.

According to the hot-press forming die of the drum brake pad, the brush is arranged on the sealing plate, and the bottom end of the brush is lower than the lower surface of the sealing plate.

The hot press forming die of the drum brake pad is characterized in that a plurality of lower dies are arranged on the machine frame, heating pieces are arranged in the lower dies, the lower dies and the cavities are correspondingly arranged, an upper die is arranged on the machine frame in a sliding mode, and a first driving assembly for driving the upper die to lift and a second driving assembly for driving the die cavity plate to lift are arranged on the machine frame.

In the technical scheme, the feeding plate is arranged on the frame, the baffle is positioned at the first position in the process of performing hot press forming of the brake pad, then raw materials are added into the transfer grooves, after single hot press forming is finished, the feeding plate is pushed, the outlets of the transfer grooves are moved to the positions above the openings of the cavities, and then the baffle is pulled, so that the baffle is transferred from the first position to the second position, the outlets of the transfer grooves are synchronously opened, and therefore raw materials in the transfer grooves can be simultaneously added into the cavities, the adding efficiency of the raw materials is improved, and the overall efficiency of hot press forming is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present invention;

FIG. 2 is a schematic rear view of another embodiment of the present invention;

FIG. 3 is a schematic view of a partial cross-sectional structure provided by a further embodiment of the present invention;

FIG. 4 is a schematic view of a partially cut-away structure from another view angle according to still another embodiment of the present invention;

FIG. 5 is an enlarged schematic view of the partial structure at A in FIG. 1;

FIG. 6 is an enlarged schematic view of a partial structure at B in FIG. 2;

FIG. 7 is an enlarged schematic view of the partial structure at C in FIG. 2;

fig. 8 is an enlarged schematic view of a partial structure at D in fig. 3.

Reference numerals illustrate:

1. a frame; 2. a cavity plate; 201. a cavity; 3. a loading plate; 4. a transfer tank; 5. a baffle; 501. a through hole; 6. a slide hole; 7. a carriage; 8. a first spring; 9. a first abutment block; 10. a second abutment block; 11. a channel; 12. a vertical groove; 13. a driving motor; 14. a first gear; 15. a first toothed plate; 16. a sealing plate; 17. a connecting pipe; 18. a second spring; 19. a lifting groove; 20. a wedge portion; 21. a brush; 22. a rotating shaft; 23. a pouring plate; 2301. a first section; 2302. a second section; 2303. a telescopic slot; 2304. an extension; 24. a second gear; 25. a cross plate; 2501. a support part; 26. a second toothed plate; 27. a scraper; 28. a third spring; 29. a lower die; 30. a heating member; 31. an upper die; 3101. and (5) pressing plates.

Detailed Description

In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

In the description of the present invention, it should be understood that, with the longitudinal direction of the cavity plate 2 being the horizontal direction and the longitudinal direction of the slide rod being the vertical direction, this direction is also the direction in which the apparatus is used, and the terms "longitudinal", "transverse", "length", "width", "degree", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Referring to fig. 1-8, the hot press forming die for a drum brake pad provided by the embodiment of the invention comprises a frame 1 and a die cavity plate 2 slidably arranged on the frame 1, wherein a plurality of die cavities 201 are arranged on the die cavity plate 2, and a feeding plate 3 is slidably arranged on the frame 1; be provided with a plurality of transfer grooves 4 that are used for keeping in the raw materials on the loading board 3, the inside smooth chamber that is provided with of loading board 3, sliding connection has baffle 5 in the smooth chamber, baffle 5 have be used for with the first position of transfer groove 4 export shutoff and be used for with the second position that transfer groove 4 exit was opened.

Specifically, the frame 1 comprises a base, a top plate and a slide bar, wherein the slide bar is positioned between the top plate and the base, two ends of the slide bar are fixedly connected with the upper surface of the base and the lower surface of the top plate respectively, the die cavity plate 2 is arranged on the slide bar in a sliding way, when raw materials are required to be added into a die cavity 201 of the die cavity plate 2, the die cavity plate 2 is arranged at the lowest end of the slide bar, namely the lower surface of the die cavity plate 2 is attached to the upper surface of the base, so that the bottom end of the die cavity 201 is sealed by the upper surface of the base, then weighed powdery raw materials are poured into the die cavity 201 one by one, and then the subsequent hot press molding and cooling demolding steps are carried out to realize the production of a drum brake block, which is not described in detail in the prior art, one of core innovation points of the invention is that a feeding plate 3 is arranged on the frame 1 in a sliding way, a sliding cavity is arranged inside the feeding plate 3, the sliding cavity is connected with a baffle 5 in a sliding way, the baffle 5 is arranged below the feeding plate 3 in a sliding way, the baffle 5 is a square plate, the transfer groove 4 is arranged above the feeding plate 3, the outlet of the transfer groove 4 is communicated with the space below the feeding plate 3, namely, the outlet of the transfer groove 4 penetrates through the feeding plate 3, the first position is the position where the body of the baffle 5 seals the outlet of the transfer groove 4, the second position is the position where the baffle 5 is separated from the outlet of the transfer groove 4, the baffle 5 is arranged in the first position in the process of hot press forming of a brake block, then raw materials are added into the transfer groove 4, after single hot press forming is finished, the feeding plate 3 is pushed, the outlets of the transfer grooves 4 are moved to the positions above the openings of the cavities 201, then the baffle 5 is pulled, the baffle 5 is transferred to the second position from the first position, the outlets of the transfer grooves 4 are synchronously opened, thus, the raw materials in the plurality of transfer tanks 4 can be simultaneously added into the plurality of cavities 201, so that the adding efficiency of the raw materials is improved, and the overall efficiency of hot press molding is improved.

When the cavity 201 has multiple rows, the addition of the raw materials can be completed only when the end parts of the baffle plates 5 need to be separated from the outlets of the multiple rows of transfer grooves 4, so that the sliding distance of the baffle plates 5 is increased, preferably, sliding holes 6 are formed in the feeding plate 3, the baffle plates 5 are slidably arranged in the sliding holes 6, a plurality of through holes 501 are formed in the baffle plates 5, the through holes 501 are arranged in one-to-one correspondence with the outlets of the transfer grooves 4, specifically, the sliding holes 6 are formed in the feeding plate 3, namely, the feeding plate 3 is a square plate with hollow inside, the baffle plates 5 are slidably arranged in the sliding holes 6, a telescopic plate-shaped structure is formed between the two plates, the transfer grooves 4 are communicated with the cavity 201 through the through holes 501, the sizes of the through holes 501 are matched with the sizes of the outlets of the transfer grooves 4, the outlet of each transfer tank 4 is correspondingly provided with a through hole 501, so the effect of the arrangement is that when raw materials are added into the transfer tank 4, the outlet of the transfer tank 4 is blocked by the baffle 5 except for the area of the through hole 501 (namely, the first position), and each through hole 501 is positioned at one side of each outlet, when raw materials need to be added into the cavity 201, the transfer tanks 4 are moved to the upper parts of the cavities 201, the baffle 5 is pulled to complete the conduction (namely, the second position) between the transfer tank 4 and the cavity 201, and the raw materials in the transfer tank 4 can fall into the cavity 201 under the action of self gravity to complete the addition of the raw materials.

Preferably, the frame 1 is fixedly connected with a sliding frame 7, the feeding plate 3 is slidably connected with the sliding frame 7, a first spring 8 is arranged between the baffle 5 and the side wall of the sliding hole 6, a first abutting block 9 is fixedly connected on the baffle 5, a second abutting block 10 is arranged on the sliding frame 7, the second abutting block 10 is positioned on the moving stroke of the first abutting block 9, a channel 11 through which the second abutting block 10 can pass is arranged on the feeding plate 3, a power assembly for driving the feeding plate 3 to reciprocate is further arranged on the sliding frame 7, the sliding frame 7 is of an L shape, the end part of the horizontal edge of the sliding frame is fixedly connected on the frame 1, the top of the vertical edge of the sliding frame is provided with a vertical groove 12, the two side walls of the vertical groove 12 are respectively provided with sliding grooves, the two sides of the feeding plate 3 are respectively slidably connected with the two sliding grooves, the first spring 8 has one end fixed to the side wall of the slide hole 6 and the other end fixed to the end of the baffle 5, the first abutting block 9 and the second abutting block 10 are preferably square blocks, the first abutting block 9 is fixed to the lower surface of the baffle 5, the second abutting block 10 is fixed to the inner bottom wall of the vertical groove 12, the power component can be a reciprocating driving mechanism such as a cylinder, the power component is provided with the functions that when the first abutting block 9 and the second abutting block 10 are not abutted, the baffle 5 is basically positioned in the slide hole 6, the through hole 501 is staggered with the outlet of the transfer groove 4, the first spring 8 is in a natural state, under the action of the first spring 8, the positions of the baffle 5 and the feeding plate 3 are flexibly limited (namely, the positions of the feeding plate 3 and the baffle 5 are kept relatively static under the action of no external force), the power component is started, the power component drives the feeding plate 3 to horizontally slide along the slide groove, when the feeding plate 3 slides, the baffle 5 and the first abutting block 9 are driven to synchronously move, when the first abutting block 9 abuts against the second abutting block 10, the baffle 5 cannot move continuously (at the moment, the transfer groove 4 reaches the upper part of the cavity 201), at the moment, the feeding plate 3 is controlled to move continuously through the power component, and because the baffle 5 does not move, relative displacement can occur between the baffle 5 and the feeding plate 3, namely, the baffle 5 slides towards the outside of the sliding hole 6 and stretches the first spring 8, at the moment, the through hole 501 can move to the lower part of the outlet of the transfer groove 4, namely, the outlet of the transfer groove 4 is opened, and raw materials can fall into the cavity 201 from the transfer groove 4, so that the passive feeding effect in the sliding process of the feeding plate 3 is realized.

Further, after loading is finished, the loading plate 3 is controlled to move reversely through the power assembly, so that the first abutting block 9 is far away from the second abutting block 10, and the baffle plate 5 is automatically reset under the action of the elastic force of the first spring 8.

Preferably, the power component includes driving motor 13 and with the first gear 14 that driving motor 13 output is connected, be provided with first pinion rack 15 on the loading board 3, driving motor 13 set up in on the carriage 7, first gear 14 with first pinion rack 15 meshing, concretely, driving motor 13, first gear 14 and first pinion rack 15 all have two, and about loading board 3 symmetrical arrangement, first pinion rack 15 rigid coupling is in loading board 3 below, driving motor 13 rigid coupling is in vertical groove 12, and the effect of setting so lies in, starts driving motor 13, and driving motor 13 drives the first gear 14 rotation of its output, under the effect of first gear 14 and first pinion rack 15 meshing to can drive first pinion rack 15 and loading board 3 horizontal reciprocating motion.

Further, the transfer tank 4 is provided with an opening, specifically, the size of the inlet at the top end of the transfer tank 4 is larger than the size of the outlet at the bottom end of the transfer tank 4, so that raw materials can be added into the transfer tank 4.

When the raw materials drops to the die cavity 201 by transfer groove 4, owing to have the clearance between loading board 3 and the die cavity board 2, and owing to the raw materials is powdered, consequently the raw materials will have the minority to float to the upper surface of die cavity board 2 at the in-process that drops on the one hand can cause the raw materials loss, and on the other hand can cause die cavity board 2 dirty, further, be provided with on loading board 3 and be used for preventing that the raw materials from falling in the sealing member of die cavity board 2 upper surface, specifically, the sealing member can be the below rigid coupling at loading board 3 has downwardly extending's communication pipeline to reduce above-mentioned clearance, thereby can reduce or even avoid the raw materials loss.

Preferably, the sealing member includes sealing plate 16 and connecting pipe 17, a plurality of connecting pipe 17 set up in sealing plate 16 top, a plurality of connecting pipe 17 with a plurality of the export one-to-one of transfer groove 4 arranges, a plurality of connecting pipe 17 all with loading plate 3 sliding connection, sealing plate 16 with be provided with second spring 18 between the loading plate 3, concretely, the size of connecting pipe 17 is greater than the size of transfer groove 4 export, connecting pipe 17 has a plurality of, and the top of a plurality of connecting pipes 17 overlaps respectively and locates the outside of loading plate 3 lower surface export, its bottom all rigid coupling is in the upper surface of sealing plate 16, the sliding arrangement also has offered lift groove 19 on the loading plate 3, the top and the lift groove 19 sliding connection of connecting pipe 17, second spring 18 is provided with a plurality of, and the one end rigid coupling of second spring 18 is in the lower surface of loading plate 3, the other end rigid coupling is in the upper surface of sealing plate 16, the effect that sets up like this, sealing plate 16 and 17 pass through second spring 18 elasticity setting up in the below of loading plate 3, in the second spring 18 elasticity effect can make sealing plate 16 and the die cavity 2 in the same size of sealing plate 16, can not be adjusted in the die cavity 2 when the clearance between the top plate and the sealing plate 16 is adjusted.

Further, the sealing plate 16 is provided with the wedge portion 20, specifically, the wedge portion 20 is disposed on the lower surface of the sealing plate 16 near one end of the frame 1, the effect of the arrangement is that before the feeding plate 3 slides towards the die cavity plate 2, the edge position of the die cavity plate 2 is located on the movement stroke of the wedge portion 20, when the feeding plate 3 is driven by the power assembly to slide, the sealing plate 16 is driven to synchronously move, when the sealing plate 16 slides towards the die cavity plate 2, the wedge portion 20 contacts with and extrudes the edge of the die cavity plate 2, the extrusion process has two benefits, firstly, the sealing plate 16 moves upwards and compresses the second spring 18, so that the lower surface of the sealing plate 16 is clung to the upper surface of the die cavity plate 2, and secondly, when the connecting pipe 17 moves upwards, the inner wall of the connecting pipe 17 is scraped with the edge position of the bottom end of the lifting groove 19, and raw materials attached on the inner wall of the connecting pipe 17 can be scraped off, so that the inner wall of the connecting pipe 17 can be self-cleaned.

Further, after the raw materials are added, the power assembly controls the sealing plate 16 to move reversely, and when the sealing plate 16 is separated from the die cavity plate 2, the sealing plate 16 and the connecting pipe 17 are automatically reset under the action of the elastic force of the second spring 18.

Further, the seal plate 16 is provided with the brush 21, the bottom end of the brush 21 is lower than the lower surface of the seal plate 16, specifically, the brush 21 is a soft brush, the brush 21 is disposed on the lower surface of the seal plate 16 near one end of the frame 1, that is, the brush 21 is located on one side of the wedge portion 20, so that the lower surface of the seal plate 16 is tightly attached to the upper surface of the cavity plate 2 after the wedge portion 20 abuts against the edge position of the cavity plate 2, and the bottom end of the brush 21 is lower than the lower surface of the seal plate 16, that is, the bottom end of the brush 21 is always in contact with the upper surface of the cavity plate 2, so that the brush 21 has a passive cleaning effect on the upper surface of the cavity plate 2 in the sliding process of the seal plate 16 to avoid dirt on the upper surface of the cavity plate 2.

As another embodiment of the present invention, a rotating shaft 22 is disposed on the transfer tank 4, a torsion spring (not shown in the drawing) is disposed on the rotating shaft 22, a dumping plate 23 is fixedly connected to the rotating shaft 22, a second gear 24 is disposed on an end portion of the rotating shaft 22 penetrating through a groove wall of the transfer tank 4 and located outside the transfer tank 4, a cross plate 25 is disposed on the baffle 5, a second toothed plate 26 matched with the second gear 24 is disposed on a portion of the cross plate 25 corresponding to the second gear 24, specifically, two vertical side walls and two inclined side walls are included in the transfer tank 4, two sides of the dumping plate 23 are attached to the two vertical side walls of the transfer tank 4, two rotating shafts 22 are disposed on each transfer tank 4, the two rotating shafts 22 are symmetrically disposed with respect to the transfer tank 4, the second gear 24 is fixedly connected to one end of the rotating shafts 22, the second gears 24 on the two rotating shafts 22 of each transfer groove 4 are respectively positioned at two sides of the transfer groove 4, the second toothed plate 26 on the right side of the transfer groove 4 is positioned above the second gear 24 on the right side, the second toothed plate 26 on the left side of the transfer groove 4 is positioned below the second gear 24 on the left side, two sections of second toothed plates 26 are arranged on each transverse plate 25 and are respectively and correspondingly arranged with each second gear 24, the torsion spring is used for enabling the dumping plate 23 to cling to the inclined side wall of the transfer groove 4 in the initial state, the effect is that in the abutting process of the first abutting block 9 and the second abutting block 10, relative displacement occurs between the baffle plate 5 and the feeding plate 3, so that the second gears 24 and the transverse plates 25 are relatively displaced, the second toothed plates 26 drive the second gears 24 to rotate, the second gears 24 rotate so as to drive the two rotating shafts 22 on the single transfer groove 4 to oppositely rotate, and then make the epaxial pouring plate 23 of pivot 22 to rotate, pouring plate 23 pivoted in-process has following three benefit, firstly, pouring plate 23 pivoted is initially, pouring plate 23's angle increases, thereby can improve the addition efficiency of raw materials, secondly, because pouring plate 23's both sides limit is laminated with transfer groove 4's both sides wall, consequently, pouring plate 23's both sides wall and transfer groove 4's both sides wall scratch, thereby can scrape the raw materials that adheres to on the vertical lateral wall of transfer groove 4, thirdly, pouring plate 23 continues to rotate, make the top mutual butt of two pouring plates 23 in the single transfer groove 4, make transfer groove 4 inside form a nearly sealed cavity, thereby can reduce or even avoid the raw materials to drop the dust that produces when the die cavity 201 bottom to waft in transfer groove 4, and then can reduce the loss of raw materials.

Further, the cross plate 25 on one side of the single transfer slot 4 is slidingly connected with the upper surface of the loading plate 3, and a supporting portion 2501 is provided at one end of the cross plate 25 on the other side, which is far away from the sliding frame 7, so as to improve the overall strength of the cross plate 25.

As a further embodiment of the present invention, the pouring plate 23 includes a first section 2301 and a second section 2302 that are sleeved with each other, the first section 2301 is fixedly connected to the rotating shaft 22, and a third spring 28 is disposed between the first section 2301 and the second section 2302, a scraper 27 is disposed on the second section 2302, the scraper 27 is in abutting connection with one side surface of the first section 2301, which is close to the outlet of the transit tank 4, specifically, a telescopic groove 2303 is disposed on the first section 2301, an extension portion 2304 is disposed on the second section 2302, the extension portion 2304 can slide along the telescopic groove 2303, one end of the third spring 28 is fixedly connected to the bottom wall of the telescopic groove 2303, and the other end of the third spring is fixedly connected to the extension portion 2304, so that after the top ends of the two pouring plates 23 abut against each other, the rotating shaft 22 is controlled, so that the two second sections 2302 inside the single transit tank 4 continuously abut against each other, and the extension portion 2304 slides towards the inside the telescopic groove 2303, and the third spring 2304 is compressed, so that the first section 2304 can be prevented from being rubbed against the first surface of the first section 2301.

Further, a plurality of lower dies 29 are disposed on the frame 1, a plurality of heating elements 30 are disposed in the lower dies 29, a plurality of lower dies 29 are disposed corresponding to a plurality of cavities 201, an upper die 31 is slidably disposed on the frame 1, a first driving assembly for driving the upper die 31 to lift and a second driving assembly for driving the die cavity plate 2 to lift are disposed on the frame 1, specifically, the heating elements 30 are preferably electric heating wires, during hot press molding, the lower dies 29 are disposed in the cavities 201, a pressing plate 3101 is disposed on the upper die 31, the first driving assembly (not shown in the figure) and the second driving assembly (not shown in the figure) can be reciprocating driving mechanisms such as hydraulic cylinders, and the like, and the effect of the arrangement is that during feeding, the die cavity plate 2 is controlled to move down above the base by the second driving assembly, then raw materials are added into the cavities 201, the first driving assembly is started while the first driving assembly is started, the upper die 31 and the pressing plate 1 is driven to move down, so that the first driving assembly and the pressing plate 31 can be controlled to cool the first driving assembly and then the lower die plate 29 to move down, and the upper die plate 3101 can be molded by the first driving assembly and then the upper die plate 2.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.

Claims (8)

1. The hot-press forming die for the drum brake pad comprises a frame and a die cavity plate which is arranged on the frame in a sliding manner, wherein a plurality of die cavities are formed in the die cavity plate;

the feeding plate is provided with a plurality of transfer grooves for temporarily storing raw materials, a sliding cavity is arranged in the feeding plate, a baffle is connected in the sliding cavity in a sliding mode, and the baffle is provided with a first position for plugging the outlet of the transfer groove and a second position for opening the outlet of the transfer groove;

the feeding plate is internally provided with a sliding hole, the baffle is arranged in the sliding hole in a sliding way, the baffle is provided with a plurality of through holes, and the through holes are arranged in one-to-one correspondence with the outlets of the transfer tanks;

the sliding frame is fixedly connected to the frame, the feeding plate is in sliding connection with the sliding frame, a first spring is arranged between the baffle plate and the side wall of the sliding hole, a first abutting block is fixedly connected to the baffle plate, a second abutting block is arranged on the sliding frame and is positioned on the movement stroke of the first abutting block, a channel through which the first abutting block can pass is formed in the feeding plate, and a power assembly for driving the feeding plate to reciprocate is further arranged on the sliding frame;

the sliding frame is L-shaped, the end part of the horizontal side of the sliding frame is fixedly connected to the frame, the top of the vertical side of the sliding frame is provided with a vertical groove, both side walls of the vertical groove are provided with sliding grooves, both sides of the feeding plate are respectively connected with the two sliding grooves in a sliding way, one end of the first spring is fixedly connected to the side wall of the sliding hole, the other end of the first spring is fixedly connected to the end part of the baffle, the first abutting block and the second abutting block are square blocks, the first abutting block is fixedly connected to the lower surface of the baffle, the second abutting block is fixedly connected to the inner bottom wall of the vertical groove, and the power assembly is a reciprocating driving assembly;

when the first abutting block and the second abutting block are not abutted, the baffle is positioned in the sliding hole, the through hole is staggered with the outlet of the transfer groove, the first spring is in a natural state, the baffle and the position of the feeding plate are flexibly limited under the action of the first spring, the power assembly is started, the feeding plate is driven to horizontally slide along the sliding groove, the baffle and the first abutting block are driven to synchronously move while the feeding plate slides, the baffle can not continuously move when the first abutting block and the second abutting block are abutted, the transfer groove is about to reach the upper side of the cavity at the moment, the feeding plate is controlled to continuously move through the power assembly, relative displacement can occur between the baffle and the feeding plate, the first spring is stretched, the through hole can move to the lower side of the outlet of the transfer groove at the moment, namely the outlet of the transfer groove is opened, and raw materials can be dropped into the cavity from the transfer groove;

be provided with the pivot in the transfer groove, just be provided with the torsional spring in the pivot, the rigid coupling has the board of empting in the pivot, the pivot runs through the cell wall of transfer groove just is located be provided with the second gear on the outside tip of transfer groove, be provided with the diaphragm on the baffle, the portion corresponding with the second gear on the diaphragm is provided with second gear matched with second pinion rack, the transfer groove includes two vertical lateral walls and two slope lateral walls, the both sides limit of dumping the board is laminated with the two vertical lateral walls of transfer groove, be provided with two pivots on every transfer groove, and two pivots are arranged about transfer groove symmetry, second gear rigid coupling is in one of them end of pivot, and the second gear of two in every transfer groove is located the both sides of transfer groove respectively, and the second pinion rack on transfer groove right side is located the top of the second gear on right side, the second pinion rack on left side is located the second gear below on left side, be provided with two sections second pinion rack on every diaphragm, and every second pinion rack is corresponding with two vertical lateral walls and two vertical lateral walls laminating, and two pivot opposite direction displacement make the opposite direction change the piece and make the relative displacement appear in the opposite direction change the piece, make the opposite direction change the pivot, make the initial displacement and the opposite direction change piece and make the opposite direction change the opposite direction piece, and make the opposite direction displacement.

2. The hot press forming die of a drum brake pad according to claim 1, wherein the power assembly comprises a driving motor and a first gear connected with an output end of the driving motor, a first toothed plate is arranged on the feeding plate, the driving motor is arranged on the sliding frame, and the first gear is meshed with the first toothed plate.

3. The hot press forming die for drum brake pad according to claim 1, wherein the intermediate rotary groove is provided with an opening.

4. The hot press forming die for drum brake pad according to claim 1, wherein a sealing member for preventing raw materials from falling on an upper surface of the cavity plate is provided on the loading plate.

5. The hot press forming die of a drum brake pad according to claim 4, wherein the sealing member comprises a sealing plate and a connecting pipe, a plurality of connecting pipes are arranged above the sealing plate, a plurality of connecting pipes are correspondingly arranged with outlets of the transfer grooves, a plurality of connecting pipes are in sliding connection with the loading plate, and a second spring is arranged between the sealing plate and the loading plate.

6. The hot press forming die for drum brake pad according to claim 5, wherein the sealing plate is provided with a wedge portion.

7. The hot press molding die of a drum brake pad according to claim 5, wherein a brush is provided on the sealing plate, and a bottom end of the brush is lower than a lower surface of the sealing plate.

8. The hot press forming die of a drum brake pad according to claim 1, wherein a plurality of lower dies are arranged on the frame, heating elements are arranged in the lower dies, the lower dies are arranged corresponding to the cavities, an upper die is arranged on the frame in a sliding manner, and a first driving assembly for driving the upper die to lift and a second driving assembly for driving the die cavity plate to lift are arranged on the frame.