CN112895319B - Injection mold for automobile glass bracket and production method - Google Patents
Injection mold for automobile glass bracket and production method Download PDFInfo
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- CN112895319B CN112895319B CN202110055255.8A CN202110055255A CN112895319B CN 112895319 B CN112895319 B CN 112895319B CN 202110055255 A CN202110055255 A CN 202110055255A CN 112895319 B CN112895319 B CN 112895319B
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- insert
- glass bracket
- automobile glass
- opening
- hole
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to an injection mold of an automobile glass bracket, which comprises an upper mold, a lower mold, a slide block, a hole-opening insert and a pairing insert, wherein the upper mold is provided with an upper open groove and a drainage through hole; the lower open groove is provided with a plurality of lower open holes, the upper open groove is provided with a plurality of upper open holes, the open hole insert is positioned in the lower open hole, the top of the open hole insert penetrates through the lower working surface of the lower die or is flush with the lower working surface of the lower die, the number of the open hole insert is the same as that of the open holes of the automobile glass bracket, the pairing insert is positioned in the upper open hole, the top of the pairing insert is flush with the upper working surface of the upper die, and the diameter of the pairing insert is larger than or equal to that of the open hole insert. This car glass bracket injection mold has improved car glass bracket injection mold's production commonality, has improved the production efficiency of car glass bracket.
Description
The technical field is as follows:
the invention relates to the field of production molds, in particular to an injection mold suitable for producing an automobile glass bracket and a production method.
Background art:
at present, the lifting and fixing functions of the side window glass of the automobile are completed by matching a bracket and a glass lifter, the automobile glass bracket is usually made of metal materials or plastic materials, the part of the automobile glass bracket connected with the automobile glass is generally of a clamping structure, and the part of the automobile glass bracket connected with the glass lifter is generally matched with a bolt and a nut to be fixedly connected. At present, the automobile glass bracket is produced by a corresponding mould, and the size and the shape of the automobile glass bracket are also set according to the shape of the automobile glass and the shape of the glass lifter; at present, corresponding molds are required to be manufactured when a new automobile glass bracket is developed, and the existing automobile glass bracket molds cannot manufacture other automobile glass brackets with different shapes; moreover, no matter the metal bracket or the plastic bracket, after the mold is manufactured, if the structure of the automobile glass bracket needs to be modified, the shape of the corresponding mold also needs to be modified, so that the manufacturing cost is increased, and more time is consumed; there is also a risk of the existing automotive glass carrier mold being scrapped or the mold being remanufactured if there is no room reserved for modification.
Chinese patent CN104669540B discloses an injection mold of an automobile glass bracket, which comprises a movable mold, a fixed mold, a hot runner, a cooling runner, a core-pulling slide block and a slide seat, wherein the core-pulling slide block is fixedly arranged on the slide seat, a structure corresponding to the inner side of the automobile glass bracket is arranged on the core-pulling slide block, and the thickness of the core-pulling slide block corresponds to the thickness of the inner side of the automobile glass bracket; during injection molding, the structure of the automobile glass bracket is formed according to the shape of the core-pulling slide block and the position of the hole in the fixed die. This patent injection mold in the position of cover half upper aperture is fixed, this patent promptly injection mold can't make the car glass bracket that has different hole sites, when the hole site of car glass bracket changes, this patent injection mold just need revise again, and then improved bracket manufacturing cost, influenced bracket production efficiency, can't be applicable to the batch mixing production of the car glass bracket of large batch, having different hole sites.
The invention content is as follows:
the invention aims to solve the technical problems that the existing injection mold can not be used for producing the automobile glass bracket with different hole positions and inner side thicknesses in a mixed manner, and when the shape of the automobile glass bracket needs to be modified, the injection mold needs to be manufactured again, so that the manufacturing cost is higher, the production efficiency is lower and the like; the automobile glass bracket injection mold is suitable for universal production of automobile glass brackets with different clamping groove thicknesses and sizes and different hole opening positions.
In order to solve the technical problem, the injection mold for the automobile glass bracket comprises an upper mold, a lower mold and a sliding block, wherein an upper groove and a drainage through hole are formed in the upper mold; the lower open groove is provided with a plurality of lower open holes, the upper open groove is provided with a plurality of upper open holes, the positions of the lower open holes relative to the lower die correspond to the positions of the open holes of the automobile glass bracket relative to the automobile glass bracket, and the positions of the upper open holes relative to the upper die correspond to the positions of the lower open holes relative to the lower die; the injection mold for the automobile glass bracket further comprises: the automobile glass bracket comprises a hole-forming insert and a matched insert, wherein the hole-forming insert has the same shape as the hole-forming shape of the automobile glass bracket, the hole-forming insert is positioned in a lower opening, the top of the hole-forming insert penetrates through the lower working surface of a lower die or is flush with the lower working surface of the lower die, the number of the hole-forming inserts is the same as that of the holes of the automobile glass bracket, the matched insert is positioned in an upper opening, the top of the matched insert is flush with the upper working surface of an upper die, and the diameter of the matched insert is larger than or equal to that of the hole-forming insert; the top of the mating insert is capable of contacting the top of the vented insert when the top of the vented insert passes through the lower working surface of the lower die.
Furthermore, the injection mold for the automobile glass bracket further comprises a supporting insert, the supporting insert is provided with a cross section shape which is the same as that of the lower opening hole, the supporting insert is arranged in the lower opening hole, and the top of the supporting insert is flush with the lower working surface of the lower groove.
Furthermore, one end of the sliding block of the automobile glass bracket injection mold is provided with a groove, and a matching structure is arranged in the groove.
Further, last fluting of car glass bracket injection mold includes fluting on the lift portion and fluting on the supporting part, and fluting and supporting part on the lift portion intercommunication each other, the shape phase-match of the lift portion of slotted shape and car glass bracket on the lift portion, the shape phase-match of the support part of slotted shape and car glass bracket on the supporting part, the centre of going up the mould is provided with the jut, and the centre of jut is provided with drainage through hole.
Further, the side of last mould of car glass bracket injection mold is provided with a plurality of exhaust holes, and the side of lower mould is provided with a plurality of exhaust holes.
Further, the lower open groove of automobile glass bracket injection mold includes under the portion that goes up and down fluting and the support portion under fluting, and the portion that goes up and down fluting is linked together each other with the support portion under the portion that goes up and down, and the shape phase-match of the portion that goes up and down fluting and the lift portion of automobile glass bracket, the shape phase-match of the portion that goes up and down fluting and the support portion of automobile glass bracket under the support portion, drainage groove and the portion that goes up and down under fluting intercommunication.
Further, car glass bracket injection mold still includes the drainage tube, and the centre in drainage groove is provided with the drainage hole, and the drainage groove passes through the drainage hole to be connected with the drainage tube, and the top of drainage tube flushes with the lower surface in drainage groove, and the top of drainage tube is protruding shape.
Further, at least one lower opening of the injection mold for the automobile glass bracket is internally provided with a hole-opening insert, at least one upper opening is internally provided with a matching insert, the hole-opening insert has the same shape as the corresponding lower opening, the shape of the hole-opening insert is the same as that of the matching insert, and the hole-opening insert and the matching insert are arranged correspondingly to each other.
Furthermore, a plurality of insert holes are formed in the opening insert of the automobile glass bracket injection mold, a plurality of matching insert holes are formed in the matching insert, the matching insert holes and the insert holes are arranged in a corresponding mode, the size of each insert hole is the same as that of the opening insert, the size of each matching insert hole is the same as that of the corresponding insert, the opening insert is arranged in each insert hole, and the matching insert is arranged in each matching insert hole.
Furthermore, the inside of last mould of car glass bracket injection mold is provided with the water route intercommunication piece, and the inside of lower mould is provided with the water route intercommunication piece.
Meanwhile, the invention also provides a production method of the automobile glass bracket applying the automobile glass bracket injection mold, which is characterized by comprising the following steps of: the method comprises the following steps:
step 1: installing the opening insert in the lower opening hole of the lower die, installing the matched insert in the corresponding upper opening hole of the upper die, communicating the drainage tube with the drainage groove on the lower die, installing the sliding block on the lower opening groove of the lower die, and arranging the matching structure of the sliding block towards the center of the automobile glass bracket injection mold;
step 2: closing the upper die and the lower die, and forming a sealing structure by the slide block, the upper open groove and the lower open groove;
and step 3: the injection molding material is introduced into the drainage through hole of the upper die, and the injection molding material is respectively introduced into the corresponding sealed space consisting of the upper open groove, the lower open groove and the sliding block through the drainage through hole and the drainage groove;
and 4, step 4: the injection molding mold of the automobile glass bracket performs injection molding on the injection molding material, and controls the production parameters of the injection molding to form the automobile glass bracket;
step 5: and separating the upper die from the lower die, separating the slide block from the automobile glass bracket, taking the injection molded automobile glass bracket out of the lower die, and cooling the automobile glass bracket in a normal temperature environment.
Furthermore, a lower die of the automobile glass bracket injection mold is internally provided with a hole-opening insert in a lower opening corresponding to the hole-opening position of the automobile glass bracket, the hole-opening insert has the same shape as the lower opening, the hole-opening insert is provided with a plurality of insert holes, and the hole-opening insert is correspondingly arranged in the insert holes; and a matching insert with the same shape as the opening insert is arranged in the upper opening of the upper die, and the matching insert is arranged in a matching insert hole of the matching insert.
Further, in step 4 of the production method of the automobile glass bracket, the production parameters of injection molding comprise injection molding time and injection molding pressure; the injection molding time of the automobile glass bracket is 30-60 seconds, and the range of injection molding pressure is 85-100 Bar.
Furthermore, the injection molding material of the production method of the automobile glass bracket is a plastic material with the temperature of 100-130 ℃.
Further, in the step 5 of the production method of the automobile glass bracket, the cooling time of the automobile glass bracket is 20-25 seconds.
According to the injection mold for the automobile glass bracket, the plurality of lower openings are formed in the corresponding lower mold, the plurality of upper openings are formed in the upper mold, and the opening inserts are arranged on the lower openings, so that the positions of the openings of the automobile glass bracket to be produced can be adjusted according to the concrete positions of the openings, and the injection mold is suitable for different automobile glass brackets with different opening positions and different inner side thickness shapes in mixed production; in the production process, the sliding block with the corresponding shape is configured according to the shape and the size of the clamping groove of the automobile glass bracket, so that the injection molding of various automobile glass brackets with different hole opening positions and clamping groove shapes is met, the production universality of an injection mold of the automobile glass bracket is improved, the manufacturing cost of the automobile glass bracket is reduced, and the production efficiency of the automobile glass bracket is improved.
Description of the drawings:
FIG. 1 is a schematic structural view of a first automotive glass carrier injection mold according to the present invention;
FIG. 2 is a schematic structural view of a slide block of the injection mold for an automotive glass carrier according to the present invention;
FIG. 3 is a schematic assembly diagram of an upper mold and a mating insert of a first automotive glass bracket injection mold according to the present invention;
FIG. 4 is a schematic assembly diagram of a lower mold, an opening insert, a support insert and a drainage tube of the first automotive glass bracket injection mold according to the present invention;
FIG. 5 is a sectional view of the structure of an assembly diagram of an upper mold, a hole-opening insert, a supporting insert, a mating insert, a drainage tube, a lower mold and a slide block of a first automotive glass bracket injection mold according to the present invention;
FIG. 6 is a schematic view of the assembly of the upper mold and the mating insert of a second automotive glass carrier injection mold in accordance with the present invention;
FIG. 7 is an assembly view of a lower mold, an opening insert, a support insert and a drainage tube of a second automotive glass bracket injection mold according to the present invention;
FIG. 8 is a cross-sectional view of the structure of an assembly diagram of an upper mold, a hole-opening insert, a support insert, a mating insert, a drainage tube, a lower mold and a slide block of a second automotive glass bracket injection mold according to the present invention.
The specific implementation mode is as follows:
the invention is further described with reference to the following drawings and detailed description.
The injection mold for the automobile glass bracket shown in fig. 1-8 comprises an upper mold 1, a lower mold 2 and a sliding block 3, wherein an upper open groove 12 and a drainage through hole 13 which are matched with the shape of the automobile glass bracket are arranged on the upper mold 1, a lower open groove 210 and a drainage groove 22 which are matched with the shape of the automobile glass bracket are arranged on the lower mold 2, the sliding block 3 is provided with a matching structure 31 which is the same as the internal shape of a clamping part of the automobile glass bracket, and the sliding block 3, the upper open groove 12 and the lower open groove 210 jointly form a sealing structure for injection molding of the automobile glass bracket; the drainage through hole 13 is communicated with the drainage groove 22, and the drainage groove 22 is communicated with the lower open groove 210; the lower slot 210 is provided with a plurality of lower openings 231, the lower openings 231 penetrate through the lower working surface 21 and the bottom surface of the lower mold 2, the upper slot 12 is provided with a plurality of upper openings 1103, the upper openings 1103 penetrate through the upper working surface 11 and the top surface of the upper mold 1, the positions of the lower openings 231 relative to the lower mold 2 correspond to the positions of the openings of the automobile glass bracket relative to the automobile glass bracket, the number of the lower openings 231 is the same as that of the openings of the automobile glass bracket, the positions of the upper openings 1103 relative to the upper mold 1 correspond to the positions of the lower openings 231 relative to the lower mold 2, and the injection mold for the automobile glass bracket further comprises: a boring insert 41, a support insert 42, and a mating insert 43, the boring insert 41 having the same shape as the shape of the opening of the automobile glass holder, the boring insert 41 being located in the lower opening 231, the top of the boring insert 41 passing through the lower surface 21 of the lower mold 2 or being flush with the lower surface 21 of the lower mold 2, the number of the boring inserts 41 being the same as the number of the openings of the automobile glass holder, the position of the boring insert 41 with respect to the lower mold 2 being the same as the position of the opening of the automobile glass holder with respect to the automobile glass holder, the support insert 42 being located in the lower opening 231 of the lower groove 210 in which the boring insert 41 is not located, the mating insert 43 being located in the upper opening 1103, the top of the mating insert 43 being flush with the upper surface 11 of the upper mold 1, the diameter of the mating insert 43 being greater than or equal to the diameter of the boring insert 41, the mating insert 43 is capable of contacting the open-bore insert 41. By arranging a plurality of lower openings 231 on the lower open groove 210, arranging a plurality of upper openings 1103 on corresponding positions of the upper open groove 12, arranging a corresponding number of the opening inserts 41 and the support inserts 42 in the lower openings 231 according to the positions and the number of the openings of the automotive glass carrier to be produced, arranging a corresponding number of the mating inserts 43 in the upper openings 1103 of the upper mold 1, and arranging the sliders 3 having the same inner shape as the clamping portions of the automotive glass carrier between the upper open groove 12 and the lower open groove 210, it is possible to adapt to the mixed production of a plurality of automotive glass carriers having different numbers and positions of the openings, and different thicknesses and shapes of the clamping portions of the automotive glass carriers, thereby improving the production versatility and the production efficiency of the automotive glass carrier injection mold, the manufacturing cost of the automobile glass bracket is reduced.
In fig. 2, the cross-sectional shape of the slider 3 is a rectangular structure, specifically, one end of the slider 3 is provided with a slot 30, a matching structure 31 is arranged in the slot 30, the matching structure 31 has the same shape as the inner shape of the clamping portion of the corresponding automotive glass bracket to be produced, the thickness of the matching structure 31 is the same as the inner thickness of the clamping portion of the automotive glass bracket to be produced, and the matching structure 31 is used for forming the inner shape of the clamping portion of the automotive glass bracket in the injection molding process of the automotive glass bracket; preferably, the thickness of the matching structure 31 ranges from 3 mm to 5 mm; when the last contact surface of last mould 1 with the lower contact surface of lower mould 2 is connected, slider 3 simultaneously with last working face 11 of last mould 1 with the lower working face 21 contact of lower mould 2, wherein, specifically, mating structure 31 orientation is close to go up mould 1 with the central direction setting of the inside of lower mould 2, slider 3 can set up steadily go up mould 1 with between the lower mould 2, slider 3 with go up mould 1 with lower mould 2 forms the seal structure that is used for moulding plastics car glass bracket jointly.
In fig. 3 and 6, the upper mold 1 is provided with two lifting upper slots 1101 corresponding to the shape of the lifting portion of the automobile glass bracket, and two supporting upper slots 1110 corresponding to the shape of the supporting portion of the glass bracket, the two lifting upper slots 1101 are respectively located at two sides of the upper mold 1, the two supporting upper slots 1110 are symmetrically arranged with respect to the center of the upper mold 1, the lifting upper slots 1101 are respectively communicated with the corresponding supporting upper slots 1110, the lifting upper slots 1101 corresponding to the supporting upper slots 1110 together form the upper slot 12, and the two upper slots 12 are symmetrically arranged on the upper mold 1; a protrusion 15 is arranged in the middle of the upper die 1, a plurality of upper holes 1103 are arranged on the protrusion 15, wherein three upper holes 1103 are located in one lifting portion upper slot 1101, three upper holes 1103 are located in the other symmetrical lifting portion upper slot 1101, three upper holes 1103 are located in one supporting portion upper slot 1110, three upper holes 1103 are located in the other symmetrical lifting portion upper slot 1101, the upper holes 1103 penetrate through the upper working surface 11 and the top surface of the upper die 1, and the positions of the upper holes 1103 correspond to the positions of the holes of the automotive glass bracket to be produced; in order to introduce the injection molding material into the automotive glass bracket mold to complete the injection molding of the automotive glass bracket, more specifically, a drainage through hole 13 is arranged in the middle of the protrusion 15, the drainage through hole 13 is of a cylindrical structure, the drainage through hole 13 penetrates through the upper working surface 11 and the top surface of the upper mold 1, the drainage through hole 13 is located in the middle of the two lifting upper grooves 1101, the distances from the drainage through hole 13 to the two lifting upper grooves 1101 are equal to each other, and the drainage through hole 13 is used for introducing the injection molding material into the mold to complete the injection molding; in order to remove air inside the mold during the injection molding process, preferably, a plurality of upper exhaust holes 14 are arranged on the side surface of the upper mold 1, and the plurality of upper exhaust holes 14 can remove excess air during the injection molding process, so that the influence of the excess air on the injection molding is prevented, and the production quality of the automobile glass bracket is further improved; more preferably, the cross-sectional shape of the upper opening 1103 is a circular shape, a quadrangular shape, or a regular hexagonal shape.
As shown in fig. 4 and 7, the lower die 2 is provided with two lower slots 210, and the two lower slots 210 are symmetrically arranged on the lower working surface 21 of the lower die 2; the lower slot 210 comprises a supporting part lower slot 2101 and a lifting part lower slot 2102, the shape of the supporting part lower slot 2101 is matched with that of a supporting part of an automobile glass bracket to be produced, the shape of the lifting part lower slot 2102 is matched with that of a lifting part of the automobile glass bracket to be produced, the supporting part lower slot 2101 is communicated with the lifting part lower slot 2102, the supporting part lower slot 2101 and the lifting part lower slot 2102 are communicated with each other to form the lower slot 210, and the supporting part lower slot 2101 is also communicated with the side face of the lower die 2; specifically, the lower slot 2101 of the supporting part of one of the lower slots 210 is communicated with one side surface of the lower die 2, and the lower slot 2101 of the supporting part of the other symmetrical lower slot 210 is communicated with the other opposite side surface of the lower die 2; more specifically, three lower openings 231 are arranged on one of the lower supporting part slots 2101, three lower openings 231 are arranged on the other symmetrical lower supporting part slot 2101, three lower openings 231 are arranged on one of the lower lifting part slots 2102, three lower openings 231 are arranged on the other symmetrical lower supporting part slot 2101, the lower openings 231 penetrate through the lower working surface 21 and the bottom surface of the lower die 2, and the positions of the lower openings 231 on the lower die 2 correspond to the positions of the openings of the produced automobile glass bracket relative to the produced automobile glass bracket; in order to introduce an injection molding material into the lower slots 210 to complete injection molding of the automobile glass bracket, specifically, the lower die 2 is provided with a flow guide slot 22, one end of the flow guide slot 22 is communicated with the lower lifting part slot 2102 of one of the lower slots 210, the other end of the flow guide slot 22 is communicated with the lower lifting part slot 2102 of the other symmetrical lower slot 210, and a circular connecting hole is arranged between the flow guide slot 22 and the lower lifting part slots 2102 of two adjacent lower slots 210 and is communicated with each other through the circular connecting hole; the drainage grooves 22 are used for guiding the injection molding materials in a molten state into the corresponding two lower grooves 210 respectively so as to perform injection molding on the automobile glass bracket; in order to further control the injection molding quality of the glass bracket, the injection mold for the automobile glass bracket further comprises a drainage tube 23, a drainage hole is formed in the middle of the drainage groove 22, the drainage groove 22 is connected with the drainage tube 23 through the drainage hole, and the top end of the drainage tube 23 is flush with the lower surface of the drainage groove 22; in order to increase the injection pressure to the injection molding material during the injection molding process, preferably, the tip of the draft tube 23 is in a protruding shape; the drainage tube 23 with the protruding shape can increase the injection pressure in the injection molding process, prevent the injection molding material from affecting the injection molding quality of the automobile glass bracket due to early cooling and solidification, and facilitate the surface polishing treatment of the automobile glass bracket after injection molding, thereby further improving the production quality of the automobile glass bracket; preferably, a plurality of exhaust holes 24 are formed in the side surface of the lower die 2, and the exhaust holes 24 can remove redundant air in the injection molding process, so that the production quality of the automobile glass bracket is further improved; more preferably, the cross-sectional shape of the lower opening 231 is a circular shape or a quadrangular shape, the draft tube 23 is a cylindrical shape, and the cross-sectional shape of the drainage groove 22 is a semicircular shape.
As shown in fig. 3 to 8, the cross-sectional shapes of the boring insert 41 and the support insert 42 correspond to the corresponding lower bores 231, the diameter of the boring insert 41 is equal to the diameter of the corresponding lower bores 231, and the diameter of the support insert 42 is equal to the diameter of the corresponding lower bores 231; the opening insert 41 and the support insert 42 are correspondingly disposed in the lower opening 231 according to the opening position and the number of glass carriers to be produced; specifically, the top of the hole-forming insert 41 passes through the lower opening 231, the top of the support insert 42 is flush with the lower working surface of the lower slot 210, the hole-forming insert 41 is used for forming an opening of an automobile glass bracket during an injection molding process, the support insert 42 is used for blocking the lower openings 231 except for the lower opening 231 provided with the hole-forming insert 41 so as to prevent the injection molding material from leaking during the injection molding process and affecting the injection molding quality of the automobile glass, simultaneously, the glass bracket is supported during the injection molding process, and the glass bracket is ejected out of the lower mold 2 after the injection molding is completed, preferably, the hole-forming insert 41 and the support insert 42 are both cylindrical structures, the diameter of the hole-forming insert 41 is the same as that of the support insert 42, and the diameter of the hole-forming insert 41 is the same as that of the opening of the automobile glass bracket, the material of the open-hole insert 41 and the support insert 42 is steel or copper.
In order to prevent the embedded nut in the hole of the automobile glass bracket from generating position deviation in the injection molding process and influencing the production quality of the automobile glass bracket, correspondingly, as shown in fig. 2 and 4, a mating insert 43 is correspondingly disposed in the upper opening 1103 of the upper mold 1, the mating insert 43 has a shape corresponding to the upper opening 1103, the mating insert 43 is penetratingly disposed in the upper mold 1, the mating insert 43 has a diameter greater than the diameter of the piercing insert 41, the mating insert 43 being adapted to cooperate with the piercing insert 41 to form the bore of the glass carrier, in the injection molding process, the embedded nut which needs to be arranged at the position of the hole of the glass bracket is pressed, so that the position of the embedded nut and the position of the hole are prevented from deviating in the injection molding process, and the injection molding quality of the glass bracket is improved; preferably, the mating insert 43 has a cylindrical structure, and the material of the mating insert 43 is metal, such as copper or steel; more specifically, the mating insert 43 may also have a diameter equal to the diameter of the piercing insert 41.
For the automotive glass carrier injection mold shown in fig. 2, 3 and 4, when the upper mold 1 and the lower mold 2 are closed, the mating insert 43 is capable of contacting the cut insert 41 located on the lower opening 231, the cut insert 41 and the mating insert 43 together forming an opening of the automotive glass carrier, and the support insert 42 is capable of supporting the automotive glass carrier during the injection molding process; the drainage through hole 13 is communicated with a drainage groove 22 on the lower die 2, the drainage channel 13 and the drainage groove 22 are used for guiding the injection molding material in a molten state into the upper open groove 12 and the lower open groove 210 respectively, and the drainage groove 22, the drainage tube 23 and the drainage channel 13 form a drainage structure together; the sliding block 3 is arranged between the upper slot 12 and the lower slot 210, the sliding block 3 is simultaneously contacted with the upper slot 12 and the lower slot 210, and forms a sealing structure together with the upper slot 12 and the lower slot 210; specifically, a gap exists between the matching structure 31 of the slider 3 and the upper groove 1110 of the supporting part, a gap exists between the matching structure 31 of the slider 3 and the lower groove 2101 of the supporting part, a sealing structure is formed between the slider 3 and the upper groove 1110 of the supporting part and the lower groove 2101 of the supporting part, the matching structure 31 of the slider 3 faces the centers of the upper die 1 and the lower die 2, and the slider 3 is used for forming an internal structure of a clamping part of an automobile glass bracket in the injection molding process of the automobile glass bracket; preferably, the ratio of the depth of the lower slot 210 to the thickness of the slider 3 is 4:10, and the ratio of the depth of the upper slot 12 to the thickness of the slider 3 is 6: 10; wherein the positions of the punching insert 41 and the support insert 42 with respect to the lower mold 2, and the numbers of the punching insert 41 and the support insert 42 can be respectively adjusted according to the positions and the numbers of the holes of the automotive glass carrier to be produced; correspondingly, on the upper open groove 12 of the upper mold 1, a corresponding number of the upper open holes 1103 are arranged according to the number and positions of the open holes of the automobile glass bracket to be produced, similarly, in the lower open groove 210 of the lower mold 2, the lower open holes 231 corresponding to the number of the upper open holes 1103 are arranged, and the open hole inserts 41 are correspondingly arranged in the lower open holes 231 for forming the open holes of the automobile glass bracket in the injection molding process; disposing the support insert 42 in the remaining lower opening 231 without the open-hole insert 41; disposing the mating insert 43 within the corresponding upper opening 1103, the mating insert 43 being in contact with the opening insert 41; preferably, three lower openings 231 are provided in the lower slot 2101 of the lifting portion of each lower slot 210, three lower openings 231 are provided in the lower slot 2101 of the supporting portion of each lower slot 210, three mating inserts 43 are provided in the three lower openings 231 located in the lower slot 2101 of the supporting portion, the opening insert 41 is provided in one of the lower openings 231 located in the lower slot 2101 of the lifting portion, two supporting inserts 42 are provided in the other two lower openings 231 located in the lower slot 2101 of the lifting portion, and the mating inserts 43 are provided in the corresponding upper openings 1103 located in the upper slot 1110 of the supporting portion.
In order to save the manufacturing cost of the injection mold for automobile glass and increase the production diversity and flexibility of the injection mold for automobile glass, as shown in fig. 6, 7 and 8, in the second injection mold for automobile glass holders, one of the lower openings 231 of the lower groove 210 of the lower mold 2 is quadrilateral, an opening insert 34 is fixedly installed in the quadrilateral lower opening 231, the shape of the opening insert 34 corresponds to the shape of the quadrilateral lower opening 231, a plurality of insert holes 330 are provided in the opening insert 34, the shapes of the insert holes 330 correspond to the shapes of the opening insert 41 and the support insert 42, the opening insert 34 can support the automobile glass holder during the injection molding process, and the insert holes 330 are directly provided in the opening insert 34, the hole-forming insert 41 and the supporting insert 42 are arranged in the insert hole 330 to form a hole for forming the automobile glass bracket, so that the production universality of the glass bracket injection mold is increased, the overall system and consistency of the automobile glass bracket injection mold are not damaged, the production universality of the automobile glass bracket injection mold is improved, the manufacturing cost is saved, and the production period is shortened; specifically, the hole-forming inserts 41 and the supporting inserts 42 are correspondingly disposed in insert holes 330 of the hole-forming insert 34, positions of the insert holes 330 relative to the hole-forming insert 34 and the number of the insert holes 330 correspond to positions and the number of holes of an automobile glass bracket relative to the automobile glass bracket, preferably, three insert holes 330 are disposed on the hole-forming insert 34, a cross section of each insert hole 330 is a circular structure, the three insert holes 330 are disposed in parallel, the hole-forming insert 41 is disposed in one insert hole 330 located in the middle of the hole-forming insert 34, the supporting inserts 42 are disposed in the other two insert holes 330, and the hole-forming insert 34 is made of a metal material.
In order to be used in a pair with the cut-out insert 34 while preventing positional deviation of an insert nut on the cut-out of an automotive glass bracket when the automotive glass bracket is produced, as shown in fig. 6, one of the upper cut-outs 1103 on the upper slot 12 of the upper mold 1 is in a quadrangular shape, and the position of the upper cut-out 1103 having the quadrangular shape with respect to the upper mold 1 corresponds to the position of the lower cut-out 231 for disposing the cut-out insert 34; specifically, a mating insert 35 is disposed in the upper opening 1103 having a quadrilateral shape, the mating insert 35 has the same shape as the opening insert 34, the mating insert 35 has a quadrilateral shape, three mating insert holes 350 are disposed on the mating insert 35, the positions of the mating insert holes 350 correspond to the positions of the insert holes 330 on the opening insert 34, the shapes of the mating insert holes 350 correspond to the shapes of the insert holes 330, the three mating insert holes 350 are disposed in parallel, and the mating inserts 43 are disposed in the three mating insert holes 350, respectively; more specifically, when the upper mold 1 and the lower mold 2 are closed, the mating insert 43 located in the mating insert hole 350 contacts the opening insert 41 located in the opening insert 34 to form an opening of the automotive glass carrier, and the mating insert 43 and the mating insert 35 can cooperate to prevent a positional deviation of an insert nut on the opening of the automotive glass carrier, thereby improving the production quality of the automotive glass carrier; preferably, the material of which the mating insert 43 is made is a metallic material.
For the automotive glass carrier injection mold shown in fig. 6, 7 and 8, when the upper mold 1 and the lower mold 2 are closed, the mating insert 43 on the mating insert 35 contacts the cut insert 41 on the cut insert 34, the cut insert 41 and the mating insert 43 together serve to form the opening of the automotive glass carrier during the injection molding process, and the support insert 42 on the cut insert 34 can support the automotive glass carrier during the injection molding process while preventing the injection material from flowing into the interior of the mold, causing damage to the mold and affecting the production quality of the automotive glass carrier; the drainage through hole 13 is communicated with a drainage groove 22 on the lower die 2, the drainage through hole 13 and the drainage groove 22 are used for respectively guiding injection molding materials in a molten state into the upper open groove 12 and the lower open groove 210, the drainage tube 23 is arranged in the middle of the drainage groove 22, the drainage groove 22 is of an oval structure, the cross section of the drainage groove 22 is semicircular, the depth of the drainage groove 22 is smaller than that of the lower open groove 210, the drainage tube 23 can increase injection molding pressure in an injection molding process, the injection molding materials are prevented from being cooled and solidified in advance to influence the quality of a bracket, surface polishing treatment of the injection molded automobile glass bracket is facilitated, and therefore the production quality of the automobile glass bracket is improved; the slider 3 is arranged between the upper slot 12 and the lower slot 210, the slider 3 is simultaneously contacted with the upper slot 12 and the lower slot 210, specifically, a gap exists between the matching structure 31 of the slider 3 and the upper slot 1110 of the support part, and a gap exists between the matching structure 31 of the slider 3 and the lower slot 2101 of the support part, preferably, the ratio of the depth of the lower slot 210 to the thickness of the slider 3 is 4:10, and the ratio of the depth of the upper slot 12 to the thickness of the slider 3 is 6: 10; a sealing structure is formed between the sliding block 3 and the upper groove 1110 of the supporting part and the lower groove 2101 of the supporting part, and injection molding materials can be cured and molded in the sealing structure, so that the automobile glass bracket is formed; more preferably, the material of the slider 3 is a metal material.
In order to improve the production efficiency of the injection mold for the automobile glass bracket and synchronously improve the injection molding quality of the automobile glass bracket, the injection mold is suitable for the rapid production of large-batch automobile glass brackets; as shown in fig. 1, the injection mold for the automobile glass bracket is fixedly installed on a working frame 6, and the working frame 6 can control the opening and closing of the upper mold 1 and the lower mold 2, so as to control the injection molding of the automobile glass bracket, thereby realizing the automatic production of the injection molding of the automobile glass bracket; specifically, the work frame 6 comprises a first base (not shown) and a second base 61, and the automotive glass bracket injection mold is fixed on the first base and the second base 61 respectively, wherein an upper mold 1 of the automotive glass bracket injection mold is fixed in the middle of the first base, and a lower mold 2 of the automotive glass bracket injection mold is fixed in the middle of the second base 61; an ejector 62 is arranged below the second base 61, the ejector 62 comprises a spring and a guide member, and the ejector 62 can push the lower die 2 out of the second base 61 along the extension direction of the guide member, so that the lower die 2 can be mounted and replaced conveniently; in order to more conveniently introduce bracket injection molding materials in a molten state into the automobile glass bracket injection mold, preferably, a drainage piece 7 is arranged on the upper mold 1, the drainage piece 7 is communicated with a drainage through hole 13 on the upper mold 1, and the installation direction of the drainage piece 7 is perpendicular to the extension direction of the upper mold 1 and is in the same straight line with the installation direction of the drainage through hole 13; through setting up drainage piece 7, the automobile glass bracket injection moulding material of molten condition can be accurate and stable introduce extremely in lower mould 2, reduced the material of moulding plastics because the waste of misoperation production has improved the injection moulding's of automobile glass bracket stability and the shaping quality of automobile glass bracket.
In order to better control the temperature of the mold during the injection molding process of the automobile glass bracket, thereby improving the injection molding quality and production controllability of the automobile glass bracket and reducing the influence of the external temperature on the injection molding process, it is preferable that a water path communicating member (not shown) is respectively provided inside the upper mold 1 and inside the lower mold 2, the water path communicating member can be communicated with the external hot water or cold water, by providing the water path communicating member, and injecting the hot water or cold water into the water path communicating member and flowing through the upper mold 1 and the lower mold 2, the temperature of the water inside the water path communicating member and the temperatures of the upper mold 1 and the lower mold 2 can be changed, thereby realizing the control of the temperatures of the upper mold 1 and the lower mold 2 and further adjusting the temperature inside the mold during the injection molding process of the automobile glass bracket, the influence of the external environment temperature on injection molding in the production process of the automobile glass bracket is reduced, and the injection molding production quality and the production stability of the automobile glass bracket are improved.
The invention also relates to a method for producing a vehicle glazing bracket, comprising:
step 1: installing the opening insert 41 in the lower opening 231 of the lower die 2, installing the mating insert 43 in the corresponding upper opening 1103 of the upper die 1, communicating the drainage tube 23 with the drainage groove 22 located on the lower die 2, installing the slider 3 on the lower opening 210 of the lower die 2, and arranging the matching structure 31 of the slider 3 towards the center of the automotive glass carrier injection mold;
step 2: the upper die 1 and the lower die 2 are closed, and the sliding block 3, the upper open groove 12 and the lower open groove 210 form a sealing structure together;
and step 3: the injection molding material is introduced into the drainage through hole 13 of the upper die 1, and the injection molding material is respectively introduced into the corresponding sealed space formed by the upper open groove 12, the lower open groove 210 and the sliding block 3 through the drainage through hole 13 and the drainage groove 22;
and 4, step 4: the injection molding mold of the automobile glass bracket performs injection molding on the injection molding material, and controls the production parameters of the injection molding to form the automobile glass bracket;
step 5: separating the upper die 1 and the lower die 2, separating the slide block 3 from the automobile glass bracket, taking the automobile glass bracket after injection molding out of the lower die 2, and placing the automobile glass bracket in a normal temperature environment for cooling.
In order to improve the overall stability and consistency of the injection mold for the automobile glass bracket, preferably, the opening insert 34 is disposed in a lower opening 231 corresponding to the opening position of the automobile glass bracket in the lower mold 2, the opening insert 34 has the same shape as the lower opening 231, the opening insert 41 is disposed on an insert hole 330 of the opening insert 34, correspondingly, a mating insert 35 corresponding to the shape of the opening insert 34 is disposed on an upper opening 1103 of the upper mold 1, and the mating insert 43 is mounted in a mating insert hole 350 of the mating insert 35; in step 4, the injection molding production parameters comprise injection molding time and injection molding pressure, the injection molding time of the automobile glass bracket is 30-60 seconds, the temperature of the injection molding material is 100-130 degrees, the injection molding material is a plastic material such as polyamide resin or poly (tetramethylene terephthalate), the temperature range of the injection mold of the automobile glass bracket is 60-80 degrees, and the injection molding pressure range is 85-100 Bar; in the step 5, the cooling time of the injection molded automobile glass bracket is 20-25 seconds.
Of course, the cross-sectional shapes of the lower opening 231 of the injection mold for the automobile glass bracket and the insert hole 330 of the open-hole insert 34 are circular, and can also be other suitable shapes such as oval, quadrilateral or regular hexagon, and the number of the lower opening 231 and the insert hole 330 can be correspondingly adjusted according to the number of the openings on the automobile glass bracket to be injection molded and the different positions of the openings in different glass brackets; the injection mold for the automobile glass bracket respectively comprises two upper slots 12 and two lower slots 210, and the number of the upper slots 12 and the number of the lower slots 210 can be increased according to the number of the automobile glass bracket to be injection molded.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. An injection mold for an automobile glass bracket comprises an upper mold, a lower mold and a sliding block, wherein an upper groove and a drainage through hole are formed in the upper mold, a lower groove and a drainage groove are formed in the lower mold, the shape of the upper groove is matched with that of the automobile glass bracket, the shape of the lower groove is matched with that of the automobile glass bracket, the sliding block is provided with a matching structure which is the same as the inner shape of a clamping part of the automobile glass bracket, the sliding block, the upper groove and the lower groove jointly form a sealing structure for injection molding of the automobile glass bracket, the drainage through hole is mutually communicated with the drainage groove, and the drainage groove is communicated with the lower groove; the method is characterized in that: the lower open groove is provided with a plurality of lower open holes, the upper open groove is provided with a plurality of upper open holes, the positions of the lower open holes relative to the lower die and the positions of the open holes of the automobile glass bracket relative to the automobile glass bracket correspond to each other, and the positions of the upper open holes relative to the upper die and the positions of the lower open holes relative to the lower die correspond to each other;
the automobile glass bracket injection mold further comprises: the automobile glass bracket comprises a hole-forming insert and a matched insert, wherein the hole-forming insert has the same shape as that of an opening of an automobile glass bracket, the hole-forming insert is positioned in the lower opening, the top of the hole-forming insert penetrates through the lower working surface of the lower die or is flush with the lower working surface of the lower die, the number of the hole-forming inserts is the same as that of the openings of the automobile glass bracket, the matched insert is positioned in the upper opening, the top of the matched insert is flush with the upper working surface of the upper die, and the diameter of the matched insert is larger than or equal to that of the hole-forming insert; the top of the mating insert is capable of contacting the top of the vented insert when the top of the vented insert passes through the lower working surface of the lower die;
the injection mold for the automobile glass bracket further comprises a supporting insert, wherein the supporting insert is arranged in a lower opening of the lower open groove, which is not provided with the opening insert.
2. The automotive glass carrier injection mold of claim 1, wherein: the automobile glass bracket injection mold further comprises a supporting insert, the supporting insert is provided with a cross section shape which is the same as that of the lower opening hole, the supporting insert is arranged in the lower opening hole, and the top of the supporting insert is flush with the lower working surface of the lower groove.
3. The automotive glass carrier injection mold of claim 1, wherein: one end of the sliding block is provided with a slot, and the matching structure is arranged in the slot.
4. The automotive glass carrier injection mold of claim 1, wherein: go up the fluting and include fluting on the lift portion and fluting on the supporting part, the lift portion go up the fluting with fluting intercommunication each other on the supporting part, the shape phase-match of the lift portion of slotted shape and car glass bracket on the lift portion, the shape phase-match of the supporting part of slotted shape and car glass bracket on the supporting part, the centre of going up the mould is provided with the jut, the centre of jut is provided with drainage through-hole.
5. The automotive glass carrier injection mold of claim 1, wherein: the side of going up the mould is provided with a plurality of exhaust holes, the side of lower mould is provided with a plurality of exhaust holes.
6. The automotive glass carrier injection mold of claim 1, wherein: the lower slotting comprises a lower slotting of the lifting part and a lower slotting of the supporting part, the lower slotting of the lifting part is communicated with the lower slotting of the supporting part, the shape of the lower slotting of the lifting part is matched with that of the lifting part of the automobile glass bracket, the shape of the lower slotting of the supporting part is matched with that of the supporting part of the automobile glass bracket, and the drainage groove is communicated with the lower slotting of the lifting part.
7. The automotive glass carrier injection mold of claim 6, wherein: the automobile glass bracket injection mold further comprises a drainage tube, wherein a drainage hole is formed in the middle of the drainage groove, the drainage groove is connected with the drainage tube through the drainage hole, the top end of the drainage tube is flush with the lower surface of the drainage groove, and the top end of the drainage tube is in a protruding shape.
8. The automotive glass carrier injection mold of claim 1, wherein: at least one lower opening is internally provided with an opening insert, at least one upper opening is internally provided with a matching insert, the opening insert has the same shape as the corresponding lower opening, the shape of the opening insert is the same as that of the matching insert, and the opening insert and the matching insert are arranged correspondingly to each other.
9. The automotive glass carrier injection mold of claim 8, wherein: the hole-forming insert is provided with a plurality of insert holes, the matching insert is provided with a plurality of matching insert holes, the matching insert holes and the insert holes are arranged correspondingly, the size of the insert holes is the same as that of the hole-forming insert, the size of the matching insert holes is the same as that of the matching insert, the hole-forming insert is arranged in the insert holes, and the matching insert is arranged in the matching insert holes.
10. The automotive glass carrier injection mold of claim 1, wherein: the inside of going up the mould is provided with the water route intercommunication piece, the inside of lower mould is provided with the water route intercommunication piece.
11. A production method of an automobile glass bracket by using the injection mold of the automobile glass bracket as claimed in any one of claims 1 to 10, characterized in that: the method comprises the following steps:
step 1: installing the opening insert in the lower opening hole of the lower die, installing the matched insert in the corresponding upper opening hole of the upper die, communicating the drainage tube with the drainage groove on the lower die, installing the sliding block on the lower opening groove of the lower die, and arranging the matching structure of the sliding block towards the center of the automobile glass bracket injection mold;
step 2: closing the upper die and the lower die, and forming a sealing structure by the slide block, the upper open groove and the lower open groove;
and step 3: the injection molding material is introduced into the drainage through hole of the upper die, and the injection molding material is respectively introduced into the corresponding sealed space consisting of the upper open groove, the lower open groove and the sliding block through the drainage through hole and the drainage groove;
and 4, step 4: the injection molding mold of the automobile glass bracket performs injection molding on the injection molding material, and controls the production parameters of the injection molding to form the automobile glass bracket;
step 5: and separating the upper die from the lower die, separating the slide block from the automobile glass bracket, taking the injection molded automobile glass bracket out of the lower die, and cooling the automobile glass bracket in a normal temperature environment.
12. The method for producing an automotive glass bracket according to claim 11, characterized in that: an opening insert is arranged in a lower opening, corresponding to the opening position of the automobile glass bracket, on the lower die, the opening insert has the same shape as the lower opening, a plurality of insert holes are formed in the opening insert, and the opening insert is correspondingly arranged in the insert holes; and a matching insert with the same shape as the opening insert is arranged in the upper opening of the upper die, and the matching insert is arranged in a matching insert hole of the matching insert.
13. The method for producing an automotive glass bracket according to claim 11, characterized in that: in step 4, the production parameters of injection molding comprise injection molding time and injection molding pressure; the injection molding time of the automobile glass bracket is 30-60 seconds, and the range of injection molding pressure is 85-100 Bar.
14. The method for producing an automotive glass bracket according to claim 11, characterized in that: the injection molding material is a plastic material with the temperature of 100-130 degrees.
15. The method for producing an automotive glass bracket according to claim 11, characterized in that: in the step 5, the cooling time of the automobile glass bracket is 20-25 seconds.
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| CN202110055255.8A CN112895319B (en) | 2021-01-15 | 2021-01-15 | Injection mold for automobile glass bracket and production method |
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| CN202110055255.8A CN112895319B (en) | 2021-01-15 | 2021-01-15 | Injection mold for automobile glass bracket and production method |
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| JPH08224756A (en) * | 1995-02-22 | 1996-09-03 | Sanyo Electric Co Ltd | Mold for injection molding |
| JP2005279947A (en) * | 2004-03-26 | 2005-10-13 | Denso Corp | Mold and insert molding method |
| CN101927553A (en) * | 2009-06-19 | 2010-12-29 | 圣戈班研发（上海）有限公司 | Glass plastic package injection molding die |
| CN102127996A (en) * | 2011-03-07 | 2011-07-20 | 中欧汽车电器有限公司 | Vehicle glass lifting and fixing bracket and processing process thereof |
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| CN112895319A (en) | 2021-06-04 |
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