CN211591098U

CN211591098U - Sealing structure of injection molding mold

Info

Publication number: CN211591098U
Application number: CN201921898650.7U
Authority: CN
Inventors: 甘涛
Original assignee: Chengdu Wanshunda Mould & Parts Co ltd
Current assignee: Chengdu Wanshunda Mould & Parts Co ltd
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-09-29
Anticipated expiration: 2029-11-06

Abstract

The utility model discloses an injection moulding mould's seal structure belongs to the injection moulding mould field, an injection moulding mould's seal structure, including the bed die body, the setting is at the lower die cavity of bed die body internal, the feed inlet of setting in bed die cavity one side down, install the first collar in bed die body outer fringe, the first mounting hole on first collar is all established to the annular, install the second mounting hole that second collar and annular in last die body outer fringe all established on the second collar, go up the one end of die body, the position that is located the bed die outer fringe has been installed and has been supported the clamping ring, the one end of bed die body, the position that corresponds to the clamping ring is equipped with the insertion groove, support clamping ring embedding insertion groove. In the process of moulding plastics, prevent that outside air from seeing through mould body and the entering of lower mould body cooperation gap to effectively prevent outside air entering die cavity and lower mould intracavity and cause the cavitation face to appear in the injection moulding product surface.

Description

Sealing structure of injection molding mold

Technical Field

The utility model relates to an injection moulding mould's seal structure.

Background

The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, and the injection molding is a processing method used for batch production of parts with complex shapes, in particular to a method for injecting heated and melted plastics into a mold cavity from an injection molding machine at high pressure and obtaining a formed product after cooling and solidification.

The existing automobile plastic fixing disc is mostly manufactured by injection molding of an injection molding mold, the mold is divided into an upper mold and a lower mold, the corresponding end surfaces of the upper mold and the lower mold are provided with the same mold cavity, the outer edge of the lower mold is provided with a first mounting ring, the first mounting ring is provided with a first mounting hole in a ring shape, a feed inlet is arranged at the lower side of the mold cavity of the lower mold, a lower port of the feed inlet is provided with a threaded port, the threaded port can be screwed into a fluid threaded pipe on a workbench of an injection molding machine until the lower end surface of the lower mold is completely contacted with the upper end surface of the workbench of the injection molding machine, the first mounting hole corresponds to each threaded groove on the workbench of the injection molding machine, a bolt can be inserted into the first mounting hole, the bolt can be screwed into the threaded groove, the lower mold can be stably mounted on the workbench of the injection molding machine, molten plastic in the injection molding machine, the second mounting ring is provided with second mounting holes in an annular shape, the second mounting ring is used for butting a flange ring at the lower end of the lifting platform of the injection molding machine, round holes uniformly arranged in the annular shape on the flange ring need to correspond to the second mounting holes one by one, bolts are inserted into the round holes in one-to-one correspondence and the second mounting holes, and the bolts are locked by nuts.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an injection moulding mould's seal structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, an embodiment of the present invention provides a sealing structure of an injection mold, including a lower mold body, a lower mold cavity disposed in the lower mold body, a feed inlet disposed on one side of the lower mold cavity, a threaded opening disposed at one end of the feed inlet, a first mounting ring disposed at an outer edge of the lower mold body, a first mounting hole disposed on the first mounting ring, an upper mold body disposed at an upper side of the lower mold body, an upper mold cavity disposed in the upper mold body, a second mounting ring disposed at an outer edge of the upper mold body, and a second mounting hole disposed on the second mounting ring, wherein a pressing ring is disposed at one end of the upper mold body and at a position at an outer edge of the upper mold cavity, an insertion groove is disposed at one end of the lower mold body and a position corresponding to the pressing ring, the pressing ring enters the insertion groove, a sealing ring is disposed at one end of the pressing ring entering the insertion groove, a compression ring is arranged in the insertion groove.

Furthermore, the pressing ring is of a circular ring structure, and the insertion groove is of a circular ring groove structure.

Further, the sealing ring is of a circular ring structure.

Further, the thickness of the sealing ring is at least six millimeters.

Furthermore, the main section of the pressure receiving ring is in an isosceles trapezoid circular ring structure.

To sum up, the utility model has the advantages of it is following: in the downward removal in-process of injection molding machine elevating platform, it compresses tightly the bed die body downwards to drive the mould body, the lower terminal surface and the bed die body up end of realizing going up the mould body are to closing, when the bed die body is closing to the bed die body downwards, it gets into in the insertion groove to support the clamping ring, and support the clamping ring and drive the sealing ring and support the clamping ring downwards, the sealing ring is compressible, and has good leakproofness, the sealing ring compels in the downward pressure of clamping ring, the lower terminal surface indent of sealing ring and closely take off and attach on the clamping ring upper surface, thereby make the clamping ring and sealing ring cooperation have good leakproofness, in-process of moulding plastics, prevent that outside air from seeing through mould body and bed die body cooperation gap entering, thereby effectively prevent that outside air from getting into mould cavity and bed die cavity and causing injection moulding product surface to appear the cavitation.

Drawings

Fig. 1 is a schematic front view of an embodiment of the present invention;

fig. 2 is a schematic view partially cut away from the front view in one embodiment of the present invention;

fig. 3 is a schematic bottom view of an embodiment of the present invention;

fig. 4 is a schematic top view of an embodiment of the present invention;

fig. 5 is a schematic top view partially cut away in one embodiment of the present invention.

Wherein, 1 lower mould body, 2 die cavities, 3 first mounting ring, 4 first mounting holes, 6 last mould body, 7 last die cavities, 8 second mounting rings, 9 second mounting holes, 10 support clamping rings, 11 insertion grooves, 12 sealing rings, 13 receive the pressure ring, 101 screw thread mouth, 102 feed inlets.

Detailed Description

Referring to fig. 1, 2, 3, 4 and 5, a sealing structure of an injection mold comprises a lower mold body 1, a lower mold cavity 2 disposed in the lower mold body 1, a feed inlet 102 disposed at one side of the lower mold cavity 2, a threaded port 101 disposed at one end of the feed inlet 102, a first mounting ring 3 disposed at the outer edge of the lower mold body 1, first mounting holes 4 annularly disposed on the first mounting ring 3, an upper mold body 6 disposed at the upper side of the lower mold body 1, an upper mold cavity 7 disposed in the upper mold body 6, a second mounting ring 8 disposed at the outer edge of the upper mold body 6, and second mounting holes 9 annularly disposed on the second mounting ring 8, wherein the lower mold body 1 is integrally formed as a circular plate, the first mounting ring 3 is disposed at the lower side of the outer edge of the lower mold body 1, and the first mounting ring 3 and the lower mold body 1 are integrally formed by casting, the first mounting holes 4 are round hole structures, the number of the first mounting holes 4 is six, the first mounting holes 4 correspond to each thread groove on the workbench of the injection molding machine, bolts can be inserted into the first mounting holes 4, the bolts can be screwed into the thread grooves, the lower die body 1 can be stably mounted on the workbench of the injection molding machine, the upper die body 6 is integrally of a circular plate structure, the second mounting ring 8 is arranged on the upper side of the outer edge of the upper die body 6, the second mounting ring 8 and the upper die body 6 are integrated by fusion casting, the second mounting holes 9 are round hole structures, the number of the second mounting holes is four, the second mounting ring 8 is used for butting a flange ring at the lower end of the lifting platform of the injection molding machine, round holes which are annularly and uniformly arranged on the flange ring correspond to the second mounting holes 9 one by one, the bolts are inserted into the round holes and the second mounting holes 9 one by one, and the bolts are locked by nuts, the upper die body 6 is driven to downwards compress the lower die body 1 in the, the lower end surface of the upper die body 6 is jointed with the upper end surface of the lower die body 1.

Referring to fig. 2 and 5, a pressing ring 10 is disposed at one end of an upper die body 6 and at a position located at an outer edge of an upper die cavity 7, the pressing ring 10 is disposed at a lower end surface of the upper die body 6, the pressing ring 10 and the upper die body 6 are a fusion-cast integral body, an insertion groove 11 is disposed at one end of a lower die body 1 and at a position corresponding to the pressing ring 10, the insertion groove 11 is disposed at an upper end surface of the lower die body 1, the insertion groove 11 corresponds to the pressing ring 10, inner and outer walls of the pressing ring 10 slidably contact inner and outer walls of the insertion groove 11, the pressing ring 10 enters the insertion groove 11, the pressing ring 10 is of a circular ring structure, the insertion groove 11 is of a circular ring groove structure, a sealing ring 12 is disposed at one end of the pressing ring 10 entering the insertion groove 11, the sealing ring 12 is an asbestos packing ring, the sealing ring 12 is compressible and has good sealing performance, the lower end surface of, the sealing ring 12 is in a circular ring structure, the thickness of the sealing ring 12 is at least six millimeters, the thickness of the sealing ring 12 can be selected to be 7 millimeters, the inner wall and the outer wall of the sealing ring 12 are in sliding contact with the inner wall and the outer wall of the insertion groove 11, the compression ring 13 is arranged in the insertion groove 11, the main section of the compression ring 13 is in an isosceles trapezoid circular ring structure, the compression ring 13 is arranged at the bottom end in the insertion groove 11, the compression ring 13 and the lower die body 1 are in a fusion casting integrated piece, when the upper die body 6 is downwardly closed to the lower die body 1, the pressing ring 10 enters the insertion groove 11, and the pressing ring 10 drives the sealing ring 12 to press the compression ring 13 downwards, the sealing ring 12 is pressed on the downward pressure of the pressing ring 10, the lower end surface of the sealing ring 12 is concave upwards and tightly attached on the upper surface of the compression ring 13, so that the compression ring 13 and the sealing ring 12 are matched to have good sealing performance, in the injection molding process, external air is prevented from entering through the matching gap between the upper mold body 6 and the lower mold body 1.

In the downward movement process of the injection molding machine lifting platform, the upper die body 6 is driven to press the lower die body 1 downwards, the lower end face of the upper die body 6 is jointed with the upper end face of the lower die body 1, when the upper die body 6 is downwardly closed to the lower die body 1, the pressing ring 10 enters the insertion groove 11, and the pressing ring 10 drives the sealing ring 12 to press the compression ring 13 downwards, the sealing ring 12 can be compressed, and has good sealing performance, the sealing ring 12 is pressed against the downward pressure of the pressing ring 10, the lower end surface of the sealing ring 12 is concave and tightly attached on the upper surface of the pressed ring 13, so that the pressed ring 13 and the sealing ring 12 are matched to have good sealing performance, in the injection molding process, external air is prevented from entering through a matching gap between the upper mold body 6 and the lower mold body 1, thereby effectively preventing the outer surface of the injection product from generating cavitation erosion surface due to the external air entering the upper die cavity 7 and the lower die cavity 2.

While the present invention has been described in detail and with reference to the accompanying drawings, it is not to be considered as limited to the scope of the invention. Various modifications and changes may be made by those skilled in the art without inventive step within the scope of the appended claims.

Claims

1. The utility model provides an injection moulding mould's seal structure, including bed die body (1), lower die cavity (2) of setting in bed die body (1), feed inlet (102) of setting in bed die cavity (2) one side, set up screw thread mouth (101) at feed inlet (102) a port, install first collar (3) at bed die body (1) outer fringe, first mounting hole (4) on first collar (3) are all established to the annular, install last die body (6) at bed die body (1) upside, set up last die cavity (7) in last die body (6), install second mounting hole (9) on second collar (8) are all established to second collar (8) and annular at last die body (6) outer fringe, its characterized in that: go up the one end of mould body (6), be located the position of die cavity (7) outer fringe and installed and to support clamping ring (10), the one end of lower mould body (1), the position that corresponds to supporting clamping ring (10) are equipped with insertion groove (11), it gets into insertion groove (11) to support clamping ring (10), it has installed sealing ring (12) to support clamping ring (10) to get into the one end of insertion groove (11), the built-in pressure ring (13) that is equipped with of insertion groove (11).

2. A sealing structure of an injection mold according to claim 1, wherein: the pressing ring (10) is of a circular ring structure, and the insertion groove (11) is of a circular groove structure.

3. A sealing structure of an injection mold according to claim 1, wherein: the sealing ring (12) is of a circular ring structure.

4. A sealing structure of an injection mold according to claim 3, wherein: the thickness of the sealing ring (12) is at least six millimeters.

5. A sealing structure of an injection mold according to claim 1, wherein: the main section of the compression ring (13) is in an isosceles trapezoid circular ring structure.