CN112590093A - Die for end cover part pressing process and application - Google Patents

Die for end cover part pressing process and application Download PDF

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Publication number
CN112590093A
CN112590093A CN202011343001.8A CN202011343001A CN112590093A CN 112590093 A CN112590093 A CN 112590093A CN 202011343001 A CN202011343001 A CN 202011343001A CN 112590093 A CN112590093 A CN 112590093A
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China
Prior art keywords
template
end cover
cover part
positioning
protective
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Granted
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CN202011343001.8A
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CN112590093B (en
Inventor
许敏
罗皓
邓裕
谢峰
司晶
梁海
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Guizhou Hongyang Machinery Co ltd
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Guizhou Hongyang Machinery Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

The invention discloses a die for an end cover part pressing process and application, wherein the die comprises the following components in parts by weight: a core bar; positioning a plate; a metal member; protecting the tire; a fastener; an upper middle template and a lower middle template; the device comprises a core, an upper template and a lower template; wrapping rubber rough materials of the to-be-molded and pressed end cover part on the periphery of the metal part, installing a protective tire and a positioning plate, and penetrating a mold core rod to be screwed by using a fastener to tightly press and fix the protective tire positioned above and below to form a whole; the middle part of the metal piece is wrapped by the inner surface of the protective tire, so that rubber and glue are prevented from flowing to the surface of the metal piece to cause pollution when the rubber and the glue are pressurized and molded, the bottom surface of the protective tire is prevented from contacting with the axial end faces of the side edges of the two metal pieces, burrs formed on the end cover part in the vertical direction are convenient to trim, the glue hanging height of the end cover part during molding is ensured to be consistent with the height of the metal piece, the problem that secondary turning is needed is solved, and the processing cost and the production period are reduced.

Description

Die for end cover part pressing process and application
Technical Field
The invention relates to a die for an end cover part pressing process and application, and belongs to the technical field of dies.
Background
When two end cover parts are produced in the prior art, two independent cavities on the middle template are heated and pressed for molding, when the end cover parts are molded and pressed, the wrapping height (also called encapsulation height) of the end cover parts to a metal piece after molding is inconsistent with the metal piece, a boss is easy to form, the end cover parts 51 are shown in figure 8, the metal piece 2 is shown in figure 8, glue is left at the encapsulation height of the end cover parts which are not the metal piece after molding, the product percent of pass is low, secondary turning is needed after the end cover parts are taken out, and the processing cost and the production period are increased.
Disclosure of Invention
In order to solve the technical problem, the invention provides a die for an end cover part pressing process.
The invention also provides application of the end cover part pressing process die.
The invention is realized by the following technical scheme.
The invention provides a die for an end cover part pressing process, which comprises the following steps: the positioning plate is sleeved on the core rod;
the two metal pieces are sleeved on the core bar and symmetrically distributed on the upper surface and the lower surface of the positioning plate;
the two protective tires are symmetrically distributed and sleeved on the core bar, the bottom surfaces of the two protective tires are correspondingly contacted with the axial end surfaces of the side edges of the two metal pieces, and the inner surfaces of the protective tires are wrapped in the middle of the metal pieces;
the two fasteners are correspondingly fixed with the two ends of the core rod and apply pressing force to the protective tire for pressing;
the upper middle template and the lower middle template are correspondingly sleeved on the peripheries of the two metal pieces at intervals, the bottom of the upper middle template is provided with a sinking groove matched with the positioning plate, and the top surface of the lower middle template is contacted with the bottom surface of the positioning plate;
the two cores are correspondingly connected with the upper template and the lower template in an installing way; the bottoms of the two cores are correspondingly contacted with the tops of the two protective tires;
the inner surface of the upper middle template, the bottom surface of the mold core, the top surface of the positioning plate and the peripheral surface of the metal piece form a cavity space for forming an end cover part; the inner surface of the lower middle template, the top surface of the mold core, the bottom surface of the positioning plate and the peripheral surface of the metal piece form a cavity space for molding the other end cover part.
The positioning pin shaft A is used for guiding the up-and-down movement positions of the upper template and the upper middle template and limiting the rotation of the upper template and the upper middle template; and a space is reserved between the bottom surface of the upper template and the top surface of the upper middle template to form a prying opening.
The positioning pin shafts B penetrate through the lower template, the lower middle template and the upper middle template in an interference fit manner, and the positioning pin shafts A B guide the up-and-down movement positions of the lower template, the lower middle template and the upper middle template and limit the rotation of the lower template, the lower middle template and the upper middle template; the positioning pin shaft B and the positioning pin shaft A are distributed in a staggered manner; and the outer side contact surfaces of the lower template, the lower middle template and the upper middle template are provided with space spaces to form a prying opening.
The invention also provides application of the end cover part pressing process die, which comprises the following steps:
firstly, wrapping rubber rough materials of a to-be-molded pressing end cover part on the periphery of a metal part, then installing a protective tire and a positioning plate, and penetrating a mold core rod to be screwed by using a fastener to compress and fix the protective tire positioned above and below to form a whole;
secondly, the lower template and the lower template are positioned and installed through a positioning pin shaft B, the lower template is provided with a mold core to contact the upper protection tire inclined surface from the bottom, and at the moment, the integral lower part of the end cover part to be formed is positioned in the cavity space; the upper middle template is sleeved with a positioning pin shaft B, the upper template is sleeved with the upper middle template through the positioning pin shaft A, the upper template is provided with a mold core to be contacted with the lower protection tire inclined surface from top to bottom, and at the moment, the integral upper end cover part to be formed is positioned in the cavity space; after the assembly is finished, putting the components into a hydraulic press for pressurization and mould pressing;
finally, when the mold is opened, a crowbar is used for opening the mold between the mold plates through the prying opening, the formed end cover part stays in the assembled whole, the fastener is unscrewed and unscrewed, and the protective tire is taken down to take out the formed end cover part;
the invention has the beneficial effects that: the middle part of the metal piece is wrapped by the inner surface of the protective tire, so that rubber and glue are prevented from flowing to the surface of the metal piece to cause pollution when the rubber and the glue are pressurized and molded, the bottom surface of the protective tire is prevented from contacting with the axial end faces of the side edges of the two metal pieces, burrs formed on the end cover part in the vertical direction are convenient to trim, the glue hanging height of the end cover part during molding is ensured to be consistent with the height of the metal piece, the problem that secondary turning is needed is solved, and the processing cost and the production period are reduced.
Drawings
FIG. 1 is a schematic diagram of a front top view of the present invention in use;
FIG. 2 is a schematic front cross-sectional view of FIG. 1;
FIG. 3 is a schematic right side view in section of FIG. 1;
FIG. 4 is a schematic view of the position structure of the protective tire and metal parts of the invention;
FIG. 5 is a schematic view of the position structure of the protective tire, the metal member and the positioning plate according to the present invention;
FIG. 6 is a schematic diagram showing the position structures of the lower mold plate, the upper mold plate and the positioning plate according to the present invention;
FIG. 7 is a schematic diagram of the position structures of the upper mold plate, the upper mold plate and the positioning plate of the invention;
FIG. 8 is a schematic view of a mold release configuration for use with the present invention;
in the figure: 1-type core bar; 2-a metal piece; 3, positioning a plate; 4-a pin shaft; 5-protecting the tire; 6-a nut; 7-upper template; 8-lower template; 9-a mold core; 10-upper template; 11-a lower template; 31-a receiving trough; 13-positioning pin shaft A; 14-positioning pin B; 51-end cap parts.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
See fig. 1-8.
The invention discloses a die for an end cover part pressing process, which comprises the following steps: the positioning plate 3 is sleeved on the periphery of the core bar 1 in a transition fit manner through a through hole arranged in the middle of the positioning plate;
the two metal pieces 2 are sleeved on the periphery of the core bar 1 in a transition fit manner through a through hole arranged in the middle of the two metal pieces 2 and are symmetrically distributed on the upper surface and the lower surface of the positioning plate 3;
the two protective tires 5 are sleeved on the periphery of the core bar 1 in a transition fit manner through a through hole arranged in the middle of the protective tires 5, the two protective tires 5 are symmetrically distributed, the bottom surfaces of the two protective tires 5 are correspondingly contacted with the axial end faces of the side edges of the two metal pieces 2, and the middle parts of the metal pieces 2 are wrapped on the inner surfaces of the protective tires 5;
the two fasteners 6 are correspondingly fixed with the two ends of the core rod 1, and apply pressing force to the protective tire 5 for pressing;
the upper middle template 7 and the lower middle template 8 are correspondingly sleeved on the spaced peripheries of the two metal pieces 2 through holes arranged in the middle parts of the upper middle template 7 and the lower middle template 8, a sinking groove is arranged at the bottom of the upper middle template 7 and is matched with the positioning plate 3, and the top surface of the lower middle template 8 is contacted with the bottom surface of the positioning plate 3;
the device comprises a core 9, an upper template 10 and a lower template 11, wherein the two cores 9 are correspondingly connected with the upper template 10 and the lower template 11; the bottoms of the two cores 9 are in contact with the tops of the two protective tires 5;
the inner surface of the upper middle template 7, the bottom surface of the mold core 9, the top surface of the positioning plate 3 and the peripheral surface of the metal piece 2 form a cavity space for molding an end cover part 51; the inner surface of the lower template 8, the top surface of the mold core 9, the bottom surface of the positioning plate 3 and the outer peripheral surface of the metal piece 2 form a cavity space for molding the other end cover part.
The positioning device also comprises a pin shaft 4 for positioning and matching the two metal pieces 2 and the positioning plate 3; after the pin shaft 4 penetrates through the holes formed in the positioning plate 2, two ends of the pin shaft correspondingly extend into the holes formed in the two metal pieces 2, so that the two metal pieces 2 are matched with the positioning plate 3 in a positioning manner.
Through holes are formed in the middle of the upper template 10 and the lower template 11, and the peripheries of the two cores 9 are correspondingly installed in interference fit with the inner radiuses of the through holes in the middle of the upper template 10 and the lower template 11.
The fastener 6 is a nut, external threads are arranged at two ends of the core rod 1, the two nuts 6 are correspondingly screwed with the external threads at two ends of the core rod 1, and pressure is applied to the protective tire 5 to compress the protective tire.
The middle part of the mold core 9 is provided with a through hole, so that the nut can be screwed conveniently.
The bottom of the mold core 9 is an inner inclined plane; the top of the protective tire 5 is an outer inclined surface, and an inner inclined surface at the bottom of the mold core 9 and the outer inclined surface at the top of the protective tire 5 form inclined surface contact, so that the contact guidance and the contact stress area are improved.
The positioning device further comprises positioning pin shafts A13, the two positioning pin shafts A13 penetrate through holes formed in two sides of the upper template 10 and the upper middle template 7 in an interference fit mode, and the positioning pin shafts A13 guide the up-and-down movement positions of the upper template 10 and the upper middle template 7 and limit the upper template and the upper middle template to rotate; and a space is reserved between the bottom surface of the upper template 10 and the top surface of the middle template 7 on the upper part to form a prying opening, so that the upper template and the lower template can be pried when being demoulded.
The positioning device further comprises positioning pin shafts B14, wherein the two positioning pin shafts B14 penetrate through holes formed in two sides of the lower template 11, the lower middle template 8 and the upper middle template 7 in an interference fit mode, and the positioning pin shafts A B14 guide the up-and-down movement positions of the lower template 11, the lower middle template 8 and the upper middle template 7 to limit the rotation of the lower template 11, the lower middle template 8 and the upper middle template 7; the positioning pin shafts B14 and A13 are distributed in a staggered manner, so that the position limitation on the whole is improved; the outer side contact surfaces of the lower template 11, the lower middle template 8 and the upper middle template 7 are provided with space spaces to form a prying opening, so that the prying opening is convenient to pry the three out of the mold.
Be equipped with annular material receiving groove 31 on the upper and lower surface in the middle part of locating plate 3, be convenient for collect the material that connects to the flash during shaping suppression, avoid wholly because the flash appears the gap separation.
When the parts are matched, the inner surface and the outer surface can be in contact with each other in a circular arc mode according to rules, the phenomenon that the parts are rotated to generate displacement after being matched with each other is avoided, if the circular arc periphery of the positioning plate 3 is provided with the plane section, the arc-shaped plane section arranged on the inner surface of the upper middle template 7 is matched with the circular arc periphery plane section of the positioning plate 3, mutual rotation is achieved after the parts are matched with each other, and meanwhile the assembly guidance performance is improved.
The invention also provides application of the end cover part pressing process die, which comprises the following steps:
firstly, wrapping rubber wool of a to-be-molded pressing end cover part 51 on the periphery of a metal piece 2, then installing a protective tire 5 and a positioning plate 3, and penetrating a core bar 1 and screwing a fastener 6 to tightly press and fix the protective tire 5 positioned above and below to form a whole;
secondly, the lower middle template 8 and the lower template 11 are positioned and installed through a positioning pin B14, the lower middle template 8 with the mold core 9 contacts the inclined surface of the upper protective tire 5 from below, and at the moment, the integral lower end cover part 51 to be molded is positioned in the cavity space; the upper middle template 7 is sleeved with a positioning pin B14, the upper template 10 is sleeved with the upper middle template 7 through a positioning pin A13, the upper template 10 is provided with a mold core 9 to be contacted with the inclined surface of the protective tire 5 from top to bottom, and at the moment, the to-be-molded end cover part 51 which forms the whole upper part is positioned in the cavity space; after the assembly is finished, putting the components into a hydraulic press for pressurization and mould pressing;
finally, when the mold is opened, a crowbar is used for opening the mold between the mold plates through the prying opening, the formed end cover part 51 stays in the assembled whole, the fastener 6 is unscrewed and unscrewed, the protective tire 5 is taken down, and the formed end cover part 51 can be taken out, so that the whole mold pressing process is completed;
the middle part of the metal piece 2 is wrapped on the inner surface of the protective tire 5, so that rubber and glue are prevented from flowing to the surface of the metal piece 2 to cause pollution when the protective tire 5 is pressurized to perform mold pressing, the bottom surface of the protective tire 5 is prevented from contacting with the axial end faces of the two side edges of the two metal pieces 2, burrs formed in the vertical direction of the end cover part 51 are guaranteed to be convenient for trimming, the glue hanging height of the end cover part 51 during molding is guaranteed to be consistent with the height of the metal piece 2, the problem that secondary turning is needed is solved, and the processing cost and.
After the technical scheme is adopted, the qualification rate of the product is increased from 70% to 87% after the end cover parts are molded, statistics is carried out, 138 end covers are produced, the unit price is 45 yuan, the machining process is 3min, the hour cost rate is 22.8 yuan/hour, 138 x (87% -70%) × 45+138 × 3 ÷ 60 × 22.8 ═ 1213.02 yuan, and the cost for producing 138 end cover parts is 1213.02 yuan for enterprises.

Claims (10)

1. A mould of end cover part pressing technology, characterized by comprising: a core bar (1); the positioning plate (3), the positioning plate (3) is sleeved on the core rod (1);
the two metal pieces (2) are sleeved on the core rod (1) and are symmetrically distributed on the upper surface and the lower surface of the positioning plate (3);
the two protective tires (5) are symmetrically distributed and sleeved on the core bar (1), the bottom surfaces of the two protective tires (5) are correspondingly contacted with the axial end surfaces of the side edges of the two metal pieces (2), and the middle parts of the metal pieces (2) are wrapped by the inner surfaces of the protective tires (5);
the two fasteners (6) are correspondingly fixed with the two ends of the core bar (1) and apply pressing force to the protective tire (5) for pressing;
the upper middle template (7) and the lower middle template (8) are correspondingly sleeved on the peripheries of the two metal pieces (2) and are spaced, a sinking groove is formed in the bottom of the upper middle template (7) and is matched with the positioning plate (3), and the top surface of the lower middle template (8) is contacted with the bottom surface of the positioning plate (3);
the two cores (9) are correspondingly connected with the upper template (10) and the lower template (11); the bottoms of the two cores (9) are correspondingly contacted with the tops of the two protective tires (5);
the inner surface of the upper middle template (7), the bottom surface of the mold core (9), the top surface of the positioning plate (3) and the outer peripheral surface of the metal piece (2) form a cavity space for molding an end cover part (51); the inner surface of the lower template (8), the top surface of the mold core (9), the bottom surface of the positioning plate (3) and the outer peripheral surface of the metal piece (2) form a cavity space for molding the other end cover part.
2. The tooling for a pressing process of an end closure part as claimed in claim 1, wherein: the positioning device further comprises a pin shaft (4) for positioning and matching the two metal parts (2) and the positioning plate (3).
3. The tooling for a pressing process of an end closure part as claimed in claim 1, wherein: the middle parts of the upper template (10) and the lower template (11) are provided with through holes, and the peripheries of the two cores (9) are correspondingly installed in interference fit with the inner radiuses of the middle through holes of the upper template (10) and the lower template (11).
4. A die for a pressing process of an end closure part according to claim 3, wherein: the fastener (6) is screwed with the external thread of the core rod (1).
5. The tooling for a pressing process of an end closure part as claimed in claim 4, wherein: the middle part of the mold core (9) is provided with a through hole.
6. The tooling for a pressing process of an end closure part as claimed in claim 1, wherein: the bottom of the mold core (9) is an inner inclined plane; the top of the protective tire (5) is an outer inclined plane, and an inner inclined plane at the bottom of the mold core (9) is in inclined plane contact with the outer inclined plane at the top of the protective tire (5). .
7. The tooling for a pressing process of an end closure part as claimed in claim 1, wherein: the positioning device also comprises positioning pin shafts A (13), wherein the two positioning pin shafts A (13) penetrate through the upper template (10) and the upper middle template (7), and the positioning pin shafts A (13) guide the up-and-down movement positions of the upper template and the lower template and limit rotation; and a space is reserved between the bottom surface of the upper template (10) and the top surface of the upper middle template (7) to form a prying opening.
8. The die for pressing a terminal cover part according to claim 1 or 7, wherein: the positioning device also comprises positioning pin shafts B (14), the two positioning pin shafts B (14) penetrate through the lower template (11), the lower middle template (8) and the upper middle template (7), and the positioning pin shafts A B (14) guide the up-and-down movement positions of the lower template, the lower middle template and the upper middle template and limit rotation; the positioning pin shaft B (14) and the positioning pin shaft A (13) are distributed in a staggered manner; and the outer side contact surfaces of the lower template (11), the lower middle template (8) and the upper middle template (7) are provided with spacing spaces to form prying openings.
9. The tooling for a pressing process of an end closure part as claimed in claim 1, wherein: and the upper surface and the lower surface of the middle part of the positioning plate (3) are provided with annular material receiving grooves (31).
10. Use of a die for a pressing process of an end closure part according to any of claims 1 to 9, comprising the steps of:
firstly, wrapping rubber wool of a to-be-molded pressing end cover part (51) on the periphery of a metal piece (2), then installing a protective tire (5) and a positioning plate (3), and penetrating a core rod (1) and screwing a fastener (6) to compress and fix the protective tire (5) positioned above and below to form a whole;
secondly, the lower template (8) and the lower template (11) are positioned and installed through a positioning pin shaft B (14), the lower template (8) with a mold core (9) contacts the protection tire (5) at the upper part from the lower part, and at the moment, the part (51) of the end cover to be molded, which forms the lower part of the whole body, is positioned in the cavity space; the upper middle template (7) is sleeved with a positioning pin shaft B (14), the upper template (10) is sleeved with the upper middle template (7) through a positioning pin shaft A (13), the upper template (10) is provided with a mold core (9) and is in inclined contact with the protective tire (5) from top to bottom, and at the moment, the to-be-molded end cover part (51) above the to-be-molded end cover part forming the whole is positioned in the cavity space; after the assembly is finished, putting the components into a hydraulic press for pressurization and mould pressing;
and finally, opening the die between the templates through prying the opening when opening the die.
CN202011343001.8A 2020-11-25 2020-11-25 Die for end cover part pressing process and application Active CN112590093B (en)

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CN112590093B CN112590093B (en) 2022-06-17

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CN115674541B (en) * 2022-11-01 2023-05-30 南京肯特复合材料股份有限公司 Forming method of UHMWPE coated butterfly plate

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