CN212636414U

CN212636414U - Flash-free leather cup mold structure

Info

Publication number: CN212636414U
Application number: CN202020727207.XU
Authority: CN
Inventors: 周耀
Original assignee: Anhui Yaxinke Sealing Technology Co ltd
Current assignee: Anhui Yaxinke Sealing Technology Co ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2021-03-02
Anticipated expiration: 2030-05-07

Abstract

The utility model relates to a flash-free leather cup die structure, which comprises a die plate and a press arranged above the die plate, wherein a lower die base plate is arranged below the die plate; a plurality of mold cores are uniformly distributed on the template in an array manner, each mold core comprises an upper mold core, a middle mold core and a lower mold core, the upper mold core, the middle mold core and the lower mold core are mutually abutted to form a cavity, and a material injection hole is formed in the upper mold core and is communicated with the cavity; the planeness of the upper mold core, the middle mold core and the lower mold core is less than 0.02; the utility model discloses an in the laminating department of die cavity, the car removes unnecessary bearing surface, only leaves 3mm MAX's contact surface, and the lifting surface area is little powerful like this, and the laminating is inseparabler, and the sizing material that the sizing material spills over is minimum, has solved the die processing moreover because the uneven error factor that causes of face has reduced the processing degree of difficulty.

Description

Flash-free leather cup mold structure

Technical Field

The utility model belongs to the technical field of the mould, especially, belong to no overlap leather cup mould structure field.

Background

At present, the rubber cup product is used in a brake master cylinder of an automobile, in particular to a novel electronic brake used by new energy in the future, such as Bosey I boost; EBB, IBC, IPB, ZF, continental MKC1 brake systems are safety elements used in the most advanced brake systems today; the rubber product mold structure and the structure of a plunger and material cup system are particularly related, the weight of the mold plate is reduced, the structure is compact, the rubber product mold is suitable for automatic operation, the self-positioning and dynamic-matching and static-matching combination of the mold core is realized, and the product is produced without an out-of-tolerance flash technology; the plunger master cylinder of the automobile brake is popularized in the automobile industry and gradually replaces a piston master cylinder, the plunger master cylinder has better braking effect, particularly latest TMC8E is used, the plunger leather cup of an upgraded version has more stable generated force and shorter braking distance, is suitable for development and use of a novel electronic brake of a future new energy source, and is favorable for the development prospect of an automatic driving technology.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a leather cup mould structure without flash for solving the problems.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a flash-free leather cup die structure comprises a die plate and a press arranged above the die plate, wherein a lower die base plate is arranged below the die plate; a plurality of mold cores are uniformly distributed on the template in an array manner, each mold core comprises an upper mold core, a middle mold core and a lower mold core, the upper mold core, the middle mold core and the lower mold core are mutually abutted to form a cavity, and a material injection hole is formed in the upper mold core and is communicated with the cavity; the planeness of the upper mold core, the middle mold core and the lower mold core is less than 0.02.

As a further optimization scheme of the utility model, all be equipped with first depressed part on going up the bearing surface between mold core and the lower mold core, first depressed part is close to die cavity one side and forms first type platform.

As a further optimization scheme of the utility model, all be equipped with the second depressed part on going up the bearing surface between mold core and the well mold core, the second depressed part is close to die cavity one side and forms the second type platform.

As a further optimization scheme of the utility model, the radial width of first type platform and second type platform is less than 3 mm.

As the utility model discloses a further optimization scheme, first shape platform and second type platform all grind and are equipped with a plurality of air discharge ducts, and the aperture of air discharge duct is less than 0.01 mm.

As a further optimization scheme of the utility model, a plunger and a plunger plate are arranged above the template, a material cup plate is arranged on the periphery of the plunger plate, and a glue sealing plate is arranged between the material cup plate and the plunger; and a heating pipe and a high-pressure spring are distributed between the plunger plate and the plunger.

As a further optimization scheme of the utility model, still be equipped with the gas cap on the plunger.

The beneficial effects of the utility model reside in that:

1) the utility model removes the redundant bearing surface at the joint of the cavity by turning and only leaves the contact surface of 3mm MAX, thus the stress area is small, the pressure is strong, the joint is more compact, the adhesive material overflowing is least, the error factor caused by uneven surface in the mould processing is solved, and the processing difficulty is reduced;

2) meanwhile, a fine exhaust groove is processed through the grinding process of the precision grinder and is connected with an exhaust hole in the lower mold core, so that air in the cavity can be exhausted, and the defects of material shortage and air bubbles of a product are reduced;

3) the innovation of the structure enables the moulds of various rubber sealing products of our department to be optimized, the cost is reduced, the precision and the qualification rate of the products are greatly improved, the labor intensity of workers is reduced, the automation level is improved, and the cost of the products is greatly reduced; the quality of the product is improved, and the added value is increased.

Drawings

Fig. 1 is a schematic view of the overall structure of the mold of the present invention;

FIG. 2 is a schematic view of the combined structure of the upper, middle and lower mold cores of the present invention;

FIG. 3 is a schematic structural view of the middle cavity of the present invention;

fig. 4 is a partially enlarged schematic view of a in fig. 2 according to the present invention;

fig. 5 is a partially enlarged schematic view of B in fig. 2 according to the present invention;

in the figure: 1. a template; 11. a lower die base plate; 2. a plunger; 21. gas cap; 3. a plunger plate; 31. a material cup plate; 4. a mold core; 41. an upper mold core; 411. a material injection hole; 42. a middle mold core; 43. a lower mold core; 44. A cavity; 45. a first recess; 46. a first type table; 47. a second recess; 48. a second type platform; 5. sealing a rubber plate; 6. heating a tube; 7. a high pressure spring.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

As shown in fig. 1 to 5, the flash-free leather cup mold structure comprises a mold plate 1, a plunger 2 and a plunger plate 3 which are arranged above the mold plate 1, and a lower mold backing plate 11 is arranged below the mold plate 1; the template is made of alloy structural steel with good comprehensive performance, small processing deformation and good fatigue resistance, and the thickness of the template is not more than 8mm at most, so that the weight of the whole mold is greatly reduced, and the labor intensity of workers is reduced;

a material cup plate 31 is arranged on the periphery of the plunger plate 3, and a rubber sealing plate 5 is arranged between the material cup plate 31 and the plunger 2; a heating pipe 6 and a high-pressure spring 7 are distributed between the plunger plate 3 and the plunger 2, and a gas cap 21 is also arranged on the plunger 2;

a plurality of mold cores 4 are uniformly distributed on the template 1 in an array manner, each mold core 4 comprises an upper mold core 41, a middle mold core 42 and a lower mold core 43, the upper mold core 41, the middle mold core 42 and the lower mold core 43 are mutually abutted to form a cavity 44, a material injection hole 411 is formed in the upper mold core 41, and the material injection hole 411 is communicated with the cavity 44; when in use, the molten rubber material enters the cavity through the material injection hole to be vulcanized and cured;

in order to meet the requirement of increasingly high quality, the structure of the leather cup is more complex, the performance requirement is higher, the flashes must be uniformly controlled within 0.2mm, the control key of the flashes lies in the processing and matching of the mold core, the lower end surface of the lower template is precisely ground, so that the flatness of the mold core is within 0.02, and the error caused by the uneven integral surface is reduced when the lower template is assembled; in addition, the upper die core 41, the middle die core 42 and the lower die core 43 are all made of the material HRC55 after heat treatment, so that the service life of the die can be ensured, and the abrasion is reduced; in order to further solve the error factor caused by the uneven surface during the mold processing, a first concave part 45 is arranged on the pressure-bearing surface between the upper mold core 41 and the lower mold core 43, and a first mold table 46 is formed on the pressure-bearing surface of the first concave part 45 on the side close to the cavity 44; meanwhile, a second concave part 47 is arranged on a pressure-bearing surface between the upper mold core 41 and the middle mold core 42, a second molding bed 48 is formed by the pressure-bearing surface of the second concave part 47 close to one side of the cavity 44, and the radial widths of the first molding bed 46 and the second molding bed 48 are less than 3 mm; the redundant pressure bearing surface is removed by turning at the joint surface of the cavity, and only a contact surface with the thickness of 3mm is reserved at most, so that the stress area is reduced, the pressure intensity is increased, the joint between the mold cores is tighter, and the overflowing glue material is least; meanwhile, the error factor caused by uneven surface in the die machining is solved, and the machining difficulty is reduced;

in order to enable gas in the cavity to be smoothly and timely discharged in the glue injection process, and therefore the product forming effect and the forming quality are improved, a plurality of exhaust grooves are respectively arranged on the first molding platform 46 and the second molding platform 48 in a grinding mode, and the diameter width of each exhaust groove is smaller than 0.01 mm; fine exhaust grooves are processed through the grinding process of a precision grinding machine and are connected with exhaust holes in the lower mold core, so that air in the cavity can be exhausted, and the defects of material shortage and air bubbles of a product are reduced; the size of the air discharge groove is very small, so that only air can pass through the air discharge groove, and the sizing material cannot pass through the air discharge groove;

when the die is used, firstly, rubber sizing materials are placed on a die plate 1 through an auxiliary clamp, heating pipes 6 are distributed between a plunger plate 3 and a plunger 2 to form a heating system, the whole system is heated through the heating pipes 6, a temperature control pipe can be arranged in the system, and the temperature control pipe is connected with a pressing machine device to monitor the temperature fluctuation and adjustment of the whole system, so that the temperature of the whole heating system is controlled within the range of technological requirements; then the whole heating system is pressed down along with the press and contacts the rubber material of the template; then, the plunger plate of the whole heating system is adjusted to be pressed downwards in a balanced manner through a high-pressure spring to generate a vulcanization acting force, so that rubber is in a molten state at high temperature, and rubber materials in the molten state can enter the cavity 44 through the material injection hole 411 of the upper mold core to be vulcanized and solidified; meanwhile, in the process of pressing down the whole heating system, due to the action of the rubber sealing plate, redundant rubber materials cannot enter the heating system, and a circular rubber flash is formed on the lower surface of the plunger;

when the rubber material is cured and ready to be demoulded, the whole die moves integrally along with the press, an air inlet hole on the plunger is opened, atmospheric pressure can push the vent hole of the gas cap 21 open to enter between the plunger and the flash, and thus the whole rubber flash falls off after being subjected to air pressure; and the upper template is opened, the middle template can be bounced off by the die due to the high-pressure spring, and the product can be scraped on the middle template and leaves the lower template. Then, an automatic ejection mechanism of the equipment is adopted to realize product demoulding and leave the middle template; thus, the whole forming process of the rubber cup is completed; it should be noted that the structural names of the parts in the above description are not shown in the drawings of the specification, but are only for better understanding and description, and the core points of the present invention are not affected even if the parts are not included.

The mold core is reasonable in structure, and the clamp spring and the mold plate can be connected to ensure the independence of each cavity, so that the product is produced without an out-of-tolerance flash (0.2mm is largest).

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. The utility model provides a no overlap leather cup mould structure which characterized in that: the device comprises a template (1), a plunger (2) and a plunger plate (3) which are arranged above the template (1), wherein a lower die base plate (11) is arranged below the template (1); a plurality of mold cores (4) are uniformly distributed on the mold plate (1) in an array mode, each mold core (4) comprises an upper mold core (41), a middle mold core (42) and a lower mold core (43), the upper mold core (41), the middle mold core (42) and the lower mold core (43) are abutted against one another to form a cavity (44), a material injection hole (411) is formed in the upper mold core (41), and the material injection hole (411) is communicated with the cavity (44); the flatness of the upper mold core (41), the middle mold core (42) and the lower mold core (43) is less than 0.02.

2. The flash-free leather cup mold structure according to claim 1, characterized in that: a first concave part (45) is arranged on a pressure bearing surface between the upper mold core (41) and the lower mold core (43), and a first mold table (46) is formed on the pressure bearing surface of one side, close to the cavity (44), of the first concave part (45).

3. The flash-free leather cup mold structure according to claim 2, characterized in that: and a second concave part (47) is arranged on the pressure bearing surface between the upper mold core (41) and the middle mold core (42), and the pressure bearing surface of one side, close to the cavity (44), of the second concave part (47) forms a second mold table (48).

4. The flash-free leather cup mold structure according to claim 3, characterized in that: the radial width of the first molding platform (46) and the second molding platform (48) is less than 3 mm.

5. The flash-free leather cup mold structure according to claim 4, wherein: a plurality of exhaust grooves are formed in the first molding table (46) and the second molding table (48) in a grinding mode, and the diameter width of each exhaust groove is smaller than 0.01 mm.

6. The structure of a flash-free leather cup mold according to any one of claims 1 to 5, characterized in that: a material cup plate (31) is arranged on the periphery of the plunger plate (3), and a rubber sealing plate (5) is arranged between the material cup plate (31) and the plunger (2); and a heating pipe (6) and a high-pressure spring (7) are distributed between the plunger plate (3) and the plunger (2).

7. The flash-free leather cup mold structure according to claim 6, wherein: the plunger (2) is also provided with an air cap (21).