CN220464586U - Oil seal injection mold - Google Patents
Oil seal injection mold Download PDFInfo
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- CN220464586U CN220464586U CN202321894999.XU CN202321894999U CN220464586U CN 220464586 U CN220464586 U CN 220464586U CN 202321894999 U CN202321894999 U CN 202321894999U CN 220464586 U CN220464586 U CN 220464586U
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- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 238000000465 moulding Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000011282 treatment Methods 0.000 abstract description 4
- 239000011365 complex material Substances 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 description 14
- 239000012778 molding material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The utility model discloses an oil seal injection mold, which comprises: the upper die assembly comprises an upper die plate and an upper die cavity assembly, the upper die cavity assembly comprises an upper die cavity piece, an upper through hole is formed in the middle of the upper die plate, and the upper die cavity piece is detachably positioned in the upper through hole; the lower die assembly comprises a lower die plate and a lower die cavity assembly, the lower die cavity assembly comprises a fixed die cavity piece and a jacking die cavity assembly, a first lower through hole is formed in the middle of the lower die plate, the fixed die cavity piece is detachably positioned in the first lower through hole, a second lower through hole is formed in the middle of the fixed die cavity piece, and the jacking die cavity assembly is arranged in the second lower through hole. When the die is processed, special materials with higher cost and more complex material treatment can be used for forming the upper cavity assembly and the lower cavity assembly of the oil seal, and the upper die plate and the lower die plate can be made of materials and treated with relatively lower cost, so that the material and processing cost can be reduced, the whole die is not required to be replaced, the processing period can be shortened, and the maintenance cost can be reduced.
Description
Technical Field
The utility model relates to the technical field of oil seal production, in particular to an oil seal injection mold.
Background
The oil seal is a common sealing element, such as PTFE framework oil seal, the oil seal is produced and molded through an injection mold, and the mold can meet production conditions only by using special materials and performing complex heat treatment due to the fact that the cavity of the mold is in contact with oil seal materials.
In the existing injection mold, the cavity is arranged on the mold plate, so that the whole mold plate needs to be made of special materials, and the whole mold plate needs to be treated during heat treatment, so that the material cost is high, and the processing period is long; in addition, if the product design is changed or the die is damaged in production and the like, the die can only be restarted or the original die falls, and the whole processing period and the maintenance cost are close to those of a new die.
Disclosure of Invention
The utility model mainly aims to provide an oil seal injection mold, which aims to solve the technical problems of higher material cost, longer processing period and higher processing period and maintenance cost of the injection mold in the prior art when the mold needs to be replaced.
In order to achieve the above object, the present utility model provides an oil seal injection mold comprising:
the upper die assembly comprises an upper die plate and an upper die cavity assembly, wherein the upper die cavity assembly comprises an upper die cavity piece, an upper through hole is formed in the middle of the upper die plate, and the upper die cavity piece is detachably positioned in the upper through hole;
the lower die assembly comprises a lower die plate and a lower die cavity assembly, the lower die cavity assembly comprises a fixed die cavity piece and a jacking die cavity assembly, a first lower through hole is formed in the middle of the lower die plate, the fixed die cavity piece is detachably positioned in the first lower through hole, a second lower through hole is formed in the middle of the fixed die cavity piece, the jacking die cavity assembly is arranged in the second lower through hole, and the jacking die cavity assembly can move up and down relative to the fixed die cavity piece;
the lower side of the upper cavity piece, the upper side of the fixed cavity piece and the upper side of the jacking cavity assembly can form a molding cavity for molding the oil seal after die assembly.
The upper die assembly comprises an upper die plate and an upper die cavity assembly, the lower die assembly comprises a lower die plate and a lower die cavity assembly, the upper die cavity assembly is detachable in an upper through hole of the upper die plate, the fixed die cavity assembly in the lower die cavity assembly is detachable in a first lower through hole of the lower die plate, and the jacking die cavity assembly can move in a second lower through hole of the fixed die cavity assembly. When the mold is processed, special materials with higher cost and more complex material treatment can be used for forming the upper cavity assembly and the lower cavity assembly of the oil seal, and the upper template and the lower template can be made of materials with relatively lower cost and treated, so that the materials and the processing cost can be reduced, the processing time can be reduced and the processing period can be shortened by respectively processing, in addition, when a product needs to be replaced or the mold cavity is damaged, only the upper cavity assembly and the lower cavity assembly can be replaced, the whole mold is not required to be replaced, the processing period can be shortened, and the maintenance cost can be reduced.
Preferably, the periphery of fixed die cavity spare is equipped with draw-in groove and first holding ring down, the draw-in groove is located under the holding ring down side under the first, be equipped with first location step down on the inner wall of first through-hole, first location step down is located the draw-in groove with between the holding ring under the first, the downside of holding ring with the upside butt of location step down under the first, lower die assembly still includes first spacing snap ring down, the inner ring portion of first spacing snap ring is located in the draw-in groove under the first, the upside of the outer loop portion of first spacing snap ring with the downside butt of location step down.
When the fixed cavity piece is assembled, the fixed cavity piece is inserted into a first lower through hole of the lower die plate, a first lower positioning ring is abutted to a first lower positioning step, then the first lower positioning ring is clamped into a first lower clamping groove, the outer ring part of the first lower positioning ring protruding out of the first lower clamping groove is clamped at the lower side of the first lower positioning step, and the fixed cavity piece is fixed with the lower die plate under the action that the first lower positioning ring and the first lower positioning step are clamped up and down; when the cavity assembly is required to be disassembled, the first lower limiting snap ring can be disassembled, and the lower cavity assembly can be taken out from the upper side of the lower die plate, so that the lower cavity assembly is convenient to install and disassemble.
Preferably, the inner side surface of the first lower positioning step is abutted with the outer side surface of the fixed cavity piece, and the outer side surface of the first lower positioning ring is abutted with the inner side surface of the first lower through hole, so that the fixed cavity piece is radially positioned in the first lower through hole.
Preferably, the jacking cavity assembly comprises a first jacking piece, a second jacking piece and a third jacking piece, the first jacking piece is detachably connected with the second lower through hole, the first jacking piece can move up and down relative to the fixed cavity piece, the second jacking piece is fixedly connected to the upper side of the middle part of the first jacking piece, the third jacking piece is fixedly connected to the upper side of the middle part of the second jacking piece, an injection hole penetrating up and down is formed in the middle part of the upper cavity piece, a first flow gap is formed between the upper side of the third jacking piece and the upper cavity piece, a second flow gap is formed between the periphery of the third jacking piece and the inner side of the second jacking piece, a third flow channel is formed in the second jacking piece, the outer side of the upper side of the second jacking piece, the inner side of the upper side of the second lower through hole, the upper side of the upper piece, the lower through hole, the upper cavity and the lower cavity form the first flow gap, the second flow gap and the third flow gap.
When injection molding is performed after die assembly, injection molding materials enter from the injection hole and sequentially pass through the first flow gap, the second flow gap and the third flow channel, and finally, the injection molding materials reach the forming cavity for forming, and the split arrangement of the first jacking piece, the second jacking piece and the third jacking piece can be respectively processed and then assembled together, so that the shapes of the first flow gap, the second flow gap, the third flow channel and the forming cavity can be conveniently processed.
Preferably, a second lower clamping groove and a second lower positioning ring are formed in the periphery of the first jacking piece, the second lower clamping groove is formed in the lower side of the second lower positioning ring, a second lower positioning step is formed in the inner wall of the second lower through hole, the lower die assembly further comprises a second lower limiting clamping ring, and the inner ring part of the second lower limiting clamping ring is arranged in the second lower clamping groove;
the second lower locating step is arranged between the second lower limiting snap ring and the second lower locating ring, the thickness of the second lower locating step is smaller than the distance from the second lower limiting snap ring to the second lower locating ring, the lower side face of the second lower locating ring can be abutted with the upper side face of the second lower locating step when the jacking cavity component moves upwards, and the upper side face of the outer ring part of the second lower limiting snap ring is abutted with the lower side face of the second lower locating step when the jacking cavity component moves downwards.
When the first jacking piece is assembled, the first jacking piece is inserted into a second lower through hole of the fixed cavity piece, a second lower positioning ring is abutted against a second lower positioning step, a second lower limiting snap ring is clamped into a second lower clamping groove, the outer ring part of the second lower limiting snap ring protrudes out of the second lower clamping groove, a certain upper and lower movable space is reserved from the second lower limiting snap ring to the second lower positioning step so that the first jacking piece moves upwards, and the second lower limiting snap ring and the second lower positioning ring respectively limit the upper and lower movement range of the jacking cavity assembly; when the jacking cavity assembly is required to be disassembled, the second lower limiting snap ring can be disassembled, and the jacking cavity assembly can be taken out from the upper side of the fixed cavity piece, so that the installation and the disassembly of the jacking cavity assembly are convenient.
Preferably, the outer side wall of the first jacking piece is provided with a third guiding conical surface, the inner wall of the second lower through hole is provided with a fourth guiding conical surface matched with the third guiding conical surface, and the third guiding conical surface and the fourth guiding conical surface are in guiding fit sliding when the first jacking piece moves downwards. The third guide conical surface of the first jacking piece is matched with the fourth guide conical surface of the second lower through hole, so that the positioning precision of the first jacking piece in the second lower through hole can be improved during injection molding, and the molding precision of the oil seal is improved.
Preferably, the periphery of going up the die cavity spare is equipped with draw-in groove and goes up the holding ring, go up the draw-in groove and locate go up the upside of holding ring, be equipped with the location step on the inner wall of going up the through-hole, go up the location step and locate go up the draw-in groove with go up between the holding ring, go up the last side of holding ring with go up the downside butt of location step, go up the die assembly and still include spacing snap ring, go up spacing snap ring's inner ring portion and locate in the draw-in groove, go up spacing snap ring's outer loop portion's downside butt in go up the last side of location step.
When the upper cavity piece is assembled, the upper cavity piece is inserted into an upper through hole of the upper template from the bottom, the upper positioning ring is abutted against the lower side of the upper positioning step, then the upper positioning ring is clamped into the upper clamping groove, the outer ring part of the upper positioning ring protruding out of the upper clamping groove is clamped on the upper side of the upper positioning step, and the upper cavity piece is fixed with the upper template under the action that the upper positioning ring and the upper positioning step are clamped up and down; when the upper cavity piece is required to be disassembled, the upper limiting snap ring can be disassembled, and the upper cavity piece can be taken out from the lower side of the upper die plate, so that the upper cavity piece is convenient to install and disassemble.
Preferably, the inner side surface of the upper positioning step is abutted with the outer side surface of the upper cavity piece, and the outer side surface of the upper positioning ring is abutted with the inner side surface of the upper through hole, so that radial positioning of the upper through hole of the upper cavity piece is realized.
Preferably, the lower side of the upper cavity piece is provided with a slot, the upper side of the fixed cavity piece is provided with an insert block, the insert block is inserted into the slot, the side wall of the slot is provided with a first guiding conical surface, the insert block is provided with a second guiding conical surface matched with the first guiding conical surface, and the first guiding conical surface and the second guiding conical surface are in guiding fit sliding during die assembly.
The first guide conical surface of the upper cavity piece is matched with the second guide conical surface of the fixed cavity piece, so that the positioning precision of the upper cavity piece and the fixed cavity piece can be directly improved during die assembly, and the molding precision of an oil seal is improved.
Preferably, a guide post is arranged on the lower side of the upper die plate, a guide sleeve is arranged on the upper side of the lower die plate, and the guide post is inserted into the guide sleeve during die assembly. The guide post and the guide sleeve can improve the positioning precision of the upper die assembly and the lower die assembly during die assembly.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the solutions of the prior art, the drawings which are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained from the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic top view of the present utility model;
FIG. 2 is a schematic cross-sectional view of section A-A of FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 2 at C;
FIG. 4 is a schematic cross-sectional view of the upper and lower die assemblies of the present utility model shown separated;
fig. 5 is a schematic cross-sectional view of section B-B of fig. 1.
In the accompanying drawings: 1-upper die assembly, 2-lower die assembly, 3-upper die plate, 31-upper through hole, 32-upper positioning step, 33-guide post, 4-upper cavity piece, 41-injection hole, 43-upper positioning ring, 44-upper limit snap ring, 45-slot, 451-first guide cone, 5-lower die plate, 51-first lower through hole, 52-first lower positioning step, 53-guide sleeve, 6-fixed cavity piece, 61-second lower through hole, 611-fourth guide cone, 63-first lower positioning ring, 64-first lower limit snap ring, 65-second lower positioning step, 66-insert, 661-second guide cone, 7-jacking cavity assembly, 71-first jacking piece, 712-second lower positioning ring, 713-third guide cone, 72-second jacking piece, 721-third flow channel, 73-third jacking piece, 731-material head breaking hole, 74-second lower limit snap ring, 75-first screw, 81-forming, 82-second flow gap, 83-second flow gap, 9-skeleton gap.
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.
In addition, if a directional instruction such as up, down, left, right, front, rear, etc. is referred to in the embodiment of the present utility model, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist and is not within the scope of protection claimed by the present utility model.
As shown in fig. 1 to 5, an oil seal injection mold includes an upper mold assembly 1 and a lower mold assembly 2.
The upper die assembly 1 comprises an upper die plate 3 and an upper die cavity assembly, the upper die cavity assembly comprises an upper die cavity piece 4, an upper through hole 31 is formed in the middle of the upper die plate 3, and the upper die cavity piece 4 is detachably positioned in the upper through hole 31.
The lower die assembly 2 comprises a lower die plate 5 and a lower die cavity assembly, the lower die cavity assembly comprises a fixed die cavity piece 6 and a jacking die cavity assembly 7, a first lower through hole 51 is formed in the middle of the lower die plate 5, the fixed die cavity piece 6 is detachably positioned in the first lower through hole 51, a second lower through hole 61 is formed in the middle of the fixed die cavity piece 6, the jacking die cavity assembly 7 is arranged in the second lower through hole 61, and the jacking die cavity assembly 7 can move up and down relative to the fixed die cavity piece 6.
The lower side of the upper cavity member 4, the upper side of the fixed cavity member 6, and the upper side of the jacking cavity assembly 7 can form a molding cavity 81 for molding an oil seal after mold clamping.
The upper die assembly 1 comprises an upper die plate 3 and an upper die cavity assembly, the lower die assembly 2 comprises a lower die plate 5 and a lower die cavity assembly, the upper die cavity assembly is detachable in an upper through hole 31 of the upper die plate 3, and a fixed die cavity piece 6 in the lower die cavity assembly is detachable in a first lower through hole 51 of the lower die plate 5. The jacking cavity assembly 7 can move up and down in the second lower through hole 61 of the fixed cavity piece 6, the jacking cavity assembly 7 is positioned at the lower side before injection molding and in the injection molding process, and after injection molding, the jacking cavity assembly 7 moves upwards, so that the formed oil seal can be jacked to be separated from the lower die assembly 2.
When the die is processed, special materials with higher cost and more complex material treatment can be used for forming the upper cavity component and the lower cavity component of the oil seal, for the PTFE oil seal, the upper cavity component and the lower cavity component which are in contact with the oil seal can be made of, for example, 4Cr5MoSiV1 materials and heat-treated HRC50-52, and the upper die plate 3 and the lower die plate 5 can be made of materials and treatments with relatively lower cost, so that the materials and the processing cost can be reduced, the processing time can be reduced, the processing period can be shortened by processing respectively, in addition, when a product needs to be replaced or the die cavity is damaged, only the upper cavity component and the lower cavity component can be replaced, the whole die is not required to be replaced, and the processing period and the maintenance cost can be reduced.
In some embodiments, referring to fig. 2 and 4, the outer periphery of the fixed cavity member 6 is provided with a first lower clamping groove and a first lower positioning ring 63, the first lower clamping groove is arranged at the lower side of the first lower positioning ring 63, the inner wall of the first lower through hole 51 is provided with a first lower positioning step 52, the first lower positioning step 52 is arranged between the first lower clamping groove and the first lower positioning ring 63, the lower side surface of the first lower positioning ring 63 is in contact with the upper side surface of the first lower positioning step 52, the lower die assembly 2 further comprises a first lower limiting clamping ring 64, the inner ring part of the first lower limiting clamping ring 64 is arranged in the first lower clamping groove, and the upper side surface of the outer ring part of the first lower limiting clamping ring 64 is in contact with the lower side surface of the first lower positioning step 52.
When the fixed cavity piece 6 is assembled, the fixed cavity piece 6 is inserted into the first lower through hole 51 of the lower die plate 5, the first lower positioning ring 63 is abutted against the first lower positioning step 52, then the first lower limiting snap ring 64 is clamped into the first lower clamping groove, the outer ring part of the first lower limiting snap ring 64 protruding from the first lower clamping groove is clamped at the lower side of the first lower positioning step 52, and the fixed cavity piece 6 is fixed with the lower die plate 5 under the action that the first lower positioning ring 63 and the first lower limiting snap ring 64 are clamped on the first lower positioning step 52 up and down; when the cavity assembly needs to be disassembled, the first lower limiting snap ring 64 can be disassembled, and the lower cavity assembly can be taken out from the upper side of the lower die plate 5, so that the lower cavity assembly is convenient to install and disassemble.
Further, the inner side surface of the first lower positioning step 52 abuts against the outer side surface of the fixed cavity member 6, and the outer side surface of the first lower positioning ring 63 abuts against the inner side surface of the first lower through hole 51, so that the fixed cavity member 6 is radially positioned in the first lower through hole 51.
In some specific embodiments, referring to fig. 2 and 3, the jacking cavity assembly 7 includes a first jacking member 71, a second jacking member 72 and a third jacking member 73, the first jacking member 71 is detachably connected with the second lower through hole 61, the first jacking member 71 can move up and down relative to the fixed cavity member 6, the second jacking member 72 is fixedly connected to the upper side of the middle part of the first jacking member 71, the third jacking member 73 is fixedly connected to the upper side of the middle part of the second jacking member 72, the middle part of the upper cavity member 4 is provided with an injection hole 41 penetrating up and down, a first flow gap 82 is provided between the upper side of the third jacking member 73 and the upper cavity member 4, a second flow gap 83 is provided between the periphery of the third jacking member 73 and the inner side of the second jacking member 72, a third flow channel 721 is provided on the second jacking member 72, the outer side of the upper side of the second jacking member 72, the inner side of the upper side of the first jacking member 71 and the lower side of the upper member 61 are formed into a third flow gap 81, and the lower flow gaps 81 and 81 are formed into a cavity 81, 81 and 81, respectively.
During injection molding after mold closing, injection molding materials enter from the injection hole 41 and sequentially pass through the first flow gap 82, the second flow gap 83 and the third flow channel 721, and finally, the cavity 81 is formed, and the split arrangement of the first lifting member 71, the second lifting member 72 and the third lifting member 73 can be respectively processed and then assembled together, so that the shapes of the first flow gap 82, the second flow gap 83, the third flow channel 721 and the forming cavity 81 are conveniently processed. For the framework 9 oil seal, the framework 9 is placed at the position of the forming cavity 81 before die assembly, and the framework 9 is integrally formed in the oil seal during injection molding.
Further, a screw hole may be formed at the lower side of the second lifting member 72, a connection hole may be formed at the first lifting member 71, and the second lifting member 72 may be fixed to the first lifting member 71 by screwing a first screw 75 through the connection hole and the screw hole. The third jacking piece 73 may be embedded on the upper side of the second jacking piece 72 by the lower side of the third jacking piece 73 in an interference fit manner, so that the upper side surface of the third jacking piece 73 is flat and the injection molding material flows through.
Further, a stub bar breaking hole 731 is provided on the upper side of the third lifting member 73, the stub bar breaking hole 731 is opposite to the injection molding hole, and the injection molding material may partially enter the stub bar breaking hole 731 for breaking the stub bar at the time of mold separation.
In some specific embodiments, referring to fig. 2 and 4, the outer periphery of the first lifting member 71 is provided with a second lower clamping groove and a second lower positioning ring 712, the second lower clamping groove is arranged at the lower side of the second lower positioning ring 712, the inner wall of the second lower through hole 61 is provided with a second lower positioning step 65, the lower die assembly 2 further comprises a second lower limiting clamping ring 74, and the inner ring part of the second lower limiting clamping ring 74 is arranged in the second lower clamping groove; the second lower positioning step 65 is disposed between the second lower limiting snap ring 74 and the second lower positioning ring 712, the thickness of the second lower positioning step 65 is smaller than the distance between the second lower limiting snap ring 74 and the second lower positioning ring 712, when the jacking cavity assembly 7 moves upwards, the lower side surface of the second lower positioning ring 712 can be abutted with the upper side surface of the second lower positioning step 65, and when the jacking cavity assembly 7 moves downwards, the upper side surface of the outer ring part of the second lower limiting snap ring 74 is abutted with the lower side surface of the second lower positioning step 65.
When the first jacking piece 71 is assembled, the first jacking piece 71 is inserted into the second lower through hole 61 of the fixed cavity piece 6, the second lower positioning ring 712 is abutted against the second lower positioning step 65, then the second lower limiting snap ring 74 is clamped into the second lower clamping groove, the outer ring part of the second lower limiting snap ring 74 protrudes out of the second lower clamping groove, and a certain upper and lower movable space is reserved from the second lower limiting snap ring 74 to the second lower positioning step 65 for the first jacking piece 71 to move upwards, and the upper and lower movement ranges of the jacking cavity assembly 7 are limited by the second lower limiting snap ring 74 and the second lower positioning ring 712 respectively; when the jacking cavity assembly 7 needs to be disassembled, the second lower limiting snap ring 74 can be disassembled, and the jacking cavity assembly 7 can be taken out from the upper side of the fixed cavity piece 6, so that the jacking cavity assembly 7 can be conveniently installed and disassembled.
Further, the outer side wall of the first lifting member 71 is provided with a third guiding conical surface 713, the inner wall of the second lower through hole 61 is provided with a fourth guiding conical surface 611 which is matched with the third guiding conical surface 713, and the third guiding conical surface 713 and the fourth guiding conical surface 611 are in guiding fit sliding when the first lifting member 71 moves downwards. The third guiding conical surface 713 of the first lifting member 71 is matched with the fourth guiding conical surface 611 of the second lower through hole 61, so that the positioning precision of the first lifting member 71 in the second lower through hole 61 can be improved during injection molding, and the molding precision of an oil seal can be improved.
In some specific embodiments, referring to fig. 4, the outer periphery of the upper cavity member 4 is provided with an upper clamping groove and an upper positioning ring 43, the upper clamping groove is arranged on the upper side of the upper positioning ring 43, an upper positioning step 32 is arranged on the inner wall of the upper through hole 31, the upper positioning step 32 is arranged between the upper clamping groove and the upper positioning ring 43, the upper side surface of the upper positioning ring 43 is in butt joint with the lower side surface of the upper positioning step 32, the upper die assembly 1 further comprises an upper limit clamping ring 44, the inner ring part of the upper limit clamping ring 44 is arranged in the upper clamping groove, and the lower side surface of the outer ring part of the upper limit clamping ring 44 is in butt joint with the upper side surface of the upper positioning step 32.
When the upper cavity piece 4 is assembled, the upper cavity piece 4 is inserted into the upper through hole 31 of the upper die plate 3 from below, the upper locating ring 43 is abutted against the lower side of the upper locating step 32, then the upper locating snap ring 44 is clamped into the upper clamping groove, the upper locating snap ring 44 can be opened forcefully to be sleeved into the upper cavity piece 4 when the upper locating snap ring 44 is clamped into the upper clamping groove, the upper locating snap ring 44 is loosened to rebound and shrink to be clamped with the upper clamping groove when the upper locating snap ring reaches the upper clamping groove, the outer ring part of the upper locating snap ring 44 protruding out of the upper clamping groove is clamped on the upper side of the upper locating step 32, and the upper cavity piece 4 is fixed with the upper die plate 3 under the action of the upper locating step 32 clamped up and down by the upper locating snap ring 43 and the upper locating snap ring 44; when the upper cavity piece 4 needs to be disassembled, the upper limit clamping ring 44 can be disassembled, and the upper cavity piece 4 can be taken out from the lower side of the upper template 3, so that the upper cavity piece 4 can be conveniently assembled and disassembled.
Further, the inner side surface of the upper positioning step 32 abuts against the outer side surface of the upper cavity member 4, and the outer side surface of the upper positioning ring 43 abuts against the inner side surface of the upper through hole 31, so that the inner radial positioning of the upper through hole 31 of the upper cavity member 4 is realized.
In some embodiments, the lower side of the upper cavity member 4 is provided with a slot 45, the upper side of the fixed cavity member 6 is provided with an insert 66, the insert 66 is inserted into the slot 45, the side wall of the slot 45 is provided with a first guiding conical surface 451, the insert 66 is provided with a second guiding conical surface 661 which is matched with the first guiding conical surface 451, and the first guiding conical surface 451 and the second guiding conical surface 661 slide in a guiding matching manner during mold closing.
The first guiding conical surface 451 of the upper cavity piece 4 is matched with the second guiding conical surface 661 of the fixed cavity piece 6, so that the positioning precision of the upper cavity piece 4 and the fixed cavity piece 6 can be directly improved during die assembly, the molding precision of an oil seal is improved, and the molding precision of an oil seal oil return line is more ensured.
In some embodiments, referring to fig. 5, the lower side of the upper die plate 3 is provided with a guide post 33, the upper side of the lower die plate 5 is provided with a guide sleeve 53, and the guide post 33 is inserted into the guide sleeve 53 during die assembly. The guide post 33 and the guide sleeve 53 can improve the positioning accuracy of the upper die assembly 1 and the lower die assembly 2 at the time of die assembly.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. An oil seal injection mold, comprising:
the upper die assembly (1) comprises an upper die plate (3) and an upper die cavity assembly, wherein the upper die cavity assembly comprises an upper die cavity piece (4), an upper through hole (31) is formed in the middle of the upper die plate (3), and the upper die cavity piece (4) is detachably positioned in the upper through hole (31);
the lower die assembly (2) comprises a lower die plate (5) and a lower die cavity assembly, the lower die cavity assembly comprises a fixed die cavity piece (6) and a jacking die cavity assembly (7), a first lower through hole (51) is formed in the middle of the lower die plate (5), the fixed die cavity piece (6) is detachably positioned in the first lower through hole (51), a second lower through hole (61) is formed in the middle of the fixed die cavity piece (6), the jacking die cavity assembly (7) is arranged in the second lower through hole (61), and the jacking die cavity assembly (7) can move up and down relative to the fixed die cavity piece (6);
the lower side of the upper cavity piece (4), the upper side of the fixed cavity piece (6) and the upper side of the jacking cavity assembly (7) can form a molding cavity (81) for molding an oil seal after die assembly.
2. The oil seal injection mold according to claim 1, wherein a first lower clamping groove and a first lower positioning ring (63) are provided on the outer periphery of the fixed cavity member (6), the first lower clamping groove is provided on the lower side of the first lower positioning ring (63), a first lower positioning step (52) is provided on the inner wall of the first lower through hole (51), the first lower positioning step (52) is provided between the first lower clamping groove and the first lower positioning ring (63), the lower side surface of the first lower positioning ring (63) is abutted with the upper side surface of the first lower positioning step (52), the lower mold member (2) further comprises a first lower limit clamping ring (64), the inner ring portion of the first lower limit clamping ring (64) is provided in the first lower clamping groove, and the upper side surface of the outer ring portion of the first lower limit clamping ring (64) is abutted with the lower side surface of the first lower positioning step (52).
3. The oil seal injection mold according to claim 2, wherein an inner side surface of the first lower positioning step (52) abuts an outer side surface of the fixed cavity member (6), and an outer side surface of the first lower positioning ring (63) abuts an inner side surface of the first lower through hole (51).
4. The oil seal injection mold according to claim 1, wherein the jacking cavity assembly (7) comprises a first jacking member (71), a second jacking member (72) and a third jacking member (73), the first jacking member (71) is detachably connected with the second lower through hole (61), the first jacking member (71) can move up and down relative to the fixed cavity member (6), the second jacking member (72) is fixedly connected to the upper side of the middle part of the first jacking member (71), the third jacking member (73) is fixedly connected to the upper side of the middle part of the second jacking member (72), the middle part of the upper cavity member (4) is provided with an injection hole (41) penetrating up and down, a first through gap (82) is arranged between the upper side of the third jacking member (73) and the upper cavity member (4), a second through gap (83) is arranged between the periphery of the third jacking member (73) and the inner side of the second jacking member (72), and the upper side of the second cavity member (72), the upper side of the second jacking member (72) is provided with a second through hole (41), and the upper side of the second cavity member (72), the upper cavity member (72) is provided with a second through gap (82), the upper through hole (41) is formed between the upper cavity member (4), and the upper cavity member (72), and the lower cavity member (72) is provided with a first through gap through hole The second flow gap (83), the third flow channel (721) and the forming cavity (81) are sequentially communicated.
5. The oil seal injection mold according to claim 4, wherein a second lower clamping groove and a second lower positioning ring (712) are arranged on the periphery of the first jacking piece (71), the second lower clamping groove is arranged on the lower side of the second lower positioning ring (712), a second lower positioning step (65) is arranged on the inner wall of the second lower through hole (61), the lower mold assembly (2) further comprises a second lower limiting clamping ring (74), and the inner ring part of the second lower limiting clamping ring (74) is arranged in the second lower clamping groove;
the second lower locating step (65) is arranged between the second lower limiting snap ring (74) and the second lower locating ring (712), the thickness of the second lower locating step (65) is smaller than the distance between the second lower limiting snap ring (74) and the second lower locating ring (712), the lower side face of the second lower locating ring (712) can be abutted with the upper side face of the second lower locating step (65) when the jacking cavity assembly (7) moves upwards, and the upper side face of the outer ring part of the second lower limiting snap ring (74) is abutted with the lower side face of the second lower locating step (65) when the jacking cavity assembly (7) moves downwards.
6. The oil seal injection mold according to claim 4, wherein a third guiding conical surface (713) is provided on an outer side wall of the first lifting member (71), a fourth guiding conical surface (611) which is arranged in a matching manner with the third guiding conical surface (713) is provided on an inner wall of the second lower through hole (61), and the third guiding conical surface (713) and the fourth guiding conical surface (611) slide in a guiding matching manner when the first lifting member (71) moves downwards.
7. The oil seal injection mold according to claim 1, wherein an upper clamping groove and an upper positioning ring (43) are arranged on the periphery of the upper cavity piece (4), the upper clamping groove is arranged on the upper side of the upper positioning ring (43), an upper positioning step (32) is arranged on the inner wall of the upper through hole (31), the upper positioning step (32) is arranged between the upper clamping groove and the upper positioning ring (43), the upper side surface of the upper positioning ring (43) is abutted with the lower side surface of the upper positioning step (32), the upper mold piece (1) further comprises an upper limiting clamp ring (44), the inner ring part of the upper limiting clamp ring (44) is arranged in the upper clamping groove, and the lower side surface of the outer ring part of the upper limiting clamp ring (44) is abutted on the upper side surface of the upper positioning step (32).
8. The oil seal injection mold according to claim 7, wherein an inner side surface of the upper positioning step (32) abuts an outer side surface of the upper cavity member (4), and an outer side surface of the upper positioning ring (43) abuts an inner side surface of the upper through hole (31).
9. The oil seal injection mold according to claim 1, wherein the lower side of the upper cavity member (4) is provided with a slot (45), the upper side of the fixed cavity member (6) is provided with an insert block (66), the insert block (66) is inserted into the slot (45), the side wall of the slot (45) is provided with a first guiding conical surface (451), the insert block (66) is provided with a second guiding conical surface (661) which is matched with the first guiding conical surface (451), and the first guiding conical surface (451) and the second guiding conical surface (661) slide in a guiding fit manner during mold closing.
10. The oil seal injection mold according to claim 1, wherein a guide post (33) is provided on the lower side of the upper die plate (3), a guide sleeve (53) is provided on the upper side of the lower die plate (5), and the guide post (33) is inserted into the guide sleeve (53) during mold closing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321894999.XU CN220464586U (en) | 2023-07-18 | 2023-07-18 | Oil seal injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321894999.XU CN220464586U (en) | 2023-07-18 | 2023-07-18 | Oil seal injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220464586U true CN220464586U (en) | 2024-02-09 |
Family
ID=89776846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321894999.XU Active CN220464586U (en) | 2023-07-18 | 2023-07-18 | Oil seal injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220464586U (en) |
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2023
- 2023-07-18 CN CN202321894999.XU patent/CN220464586U/en active Active
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