CN219171543U - Double-runner mold for electronic connector - Google Patents

Abstract

The utility model relates to a double pouring gate mould for an electronic connector, which comprises: the device comprises a lower template, an upper template, a lower forming block, an upper forming block, a cavity, a main runner, a main cold material well and first auxiliary cold material wells, wherein the upper template is arranged at the top of the lower template in a lifting manner; according to the utility model, the length of the runner inside the die is prolonged by arranging the main runner, the first auxiliary runner and the second auxiliary runner which are mutually communicated at the top of the lower die plate, so that the flow speed of sizing material is slowed down, and the fullness of the sizing material filled in the die cavity is ensured; through setting up two sets of first side runner in second auxiliary flow channel side, pour the sizing material in to the die cavity simultaneously, shorten the distance that the sizing material got into the die cavity, ensure that the product can not appear the crack after the shaping, improved the qualification rate of product.

Description

Double-runner mold for electronic connector

Technical Field

The utility model belongs to the technical field of molds, and particularly relates to a double-runner mold for an electronic connector.

Background

Electronic connectors, also called connectors, are also referred to in the country as contacts and sockets, and are generally referred to as electrical connectors. I.e. a device connecting two active devices, which carries a current or signal. The male and female terminals are capable of transmitting a message or current through contact, also referred to as a connector. In order to improve the use safety factor of the electronic connector, the electronic connector is generally manufactured through an injection molding process, namely, after colloidal particles to be molded are heated and melted, the colloidal particles are injected into a mold cavity from top to bottom through an injection molding machine to be molded, and then the colloidal particles are ejected.

The existing injection mold is usually formed by injecting molten sizing material into a cavity of the mold through an outer runner, and then directly injecting the sizing material into the cavity of the mold through an inner runner, wherein the situation that the cavity is not full is caused due to the fact that the vertical pouring speed is high, one side, close to the inner runner, of the cavity is poured preferentially, one side, far away from the inner runner, of the cavity is poured in a delayed mode, the forming time difference of the two parts is large, cracks are easy to occur in formed products, and the qualification rate of final products is affected.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a double-runner mold for an electronic connector.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a dual runner mold for an electronic connector, comprising:

the device comprises a lower template, an upper template, a lower molding block, an upper molding block, a cavity, a main runner, a main cold material well, a first auxiliary runner, a second auxiliary cold material well, a first side runner, a second side runner and a feeding barrel, wherein the upper template is arranged at the top of the lower template in a lifting manner;

the second side runner is connected with the first side runner, the feeding port is connected with the cavity, the main cold material well is located in the middle of the main runner, the first auxiliary runner is close to the first auxiliary cold material well, the first auxiliary runner is connected with the middle of the second auxiliary runner, the first side runner is close to the second auxiliary cold material well, and the second auxiliary runner is parallel to the main runner.

Optimally, the device further comprises a top plate fixed at the top of the upper template, a feeding plate fixed at the top of the top plate, a bottom plate fixed at the bottom of the lower template, a lifting plate arranged below the bottom plate in a lifting manner, an outer feeding hole formed at the top of the feeding plate and a through hole formed at the bottom of the outer feeding hole, wherein the ejector pin is fixed at the top of the lifting plate and penetrates through the bottom plate and the lower template.

Optimally, the feeding cylinder comprises a fixed plate fixed at the bottom of the outer feeding hole, a feeding column integrally connected at the bottom of the fixed plate and penetrating through the through hole, a material bearing part arranged at the top of the fixed plate and a feeding channel penetrating through the feeding column and connected with the material bearing part, wherein the material bearing part is in a downward concave arc shape, the section of the feeding channel is in an isosceles trapezoid shape, and the upper bottom of the isosceles trapezoid shape is connected with the material bearing part.

Optimally, the upper cooling device further comprises an upper clamping groove formed in the outer side of the upper template, a lower clamping groove formed in the outer side of the lower template, an upper clamping block fixed in the upper clamping groove, a lower clamping block fixed in the lower clamping groove, an upper cooling runner arranged in the upper template and a lower cooling runner arranged in the lower template, wherein the upper clamping block is matched with the lower clamping block.

Optimally, the device also comprises an exhaust hole formed in the bottom of the main cold material well, an exhaust rod arranged in the exhaust hole in a lifting manner, a mandril groove formed in the bottom of the second auxiliary runner and a mandril arranged in the mandril groove in a lifting manner, wherein the exhaust rod and the mandril are fixed at the top of the lifting plate.

Optimally, the feed inlet is arranged obliquely downwards, and the diameter of the feed inlet is gradually reduced.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

the molten sizing material is poured into the outer feeding hole, and the length of the runner inside the die is prolonged by arranging the main runner, the first auxiliary runner and the second auxiliary runner which are mutually communicated at the top of the lower die plate, so that the flowing speed of the sizing material is slowed down, and the fullness of the sizing material filled in the die cavity is ensured; the cold material wells corresponding to the cold material wells are arranged on the two sides of the runner and used for storing the cooling part at the front end of the sizing material, so that the runner is prevented from being blocked; through setting up two sets of first side runner in second auxiliary flow channel side, pour the sizing material in to the die cavity simultaneously, shorten the distance that the sizing material got into the die cavity, ensure that the product can not appear the crack after the shaping, improved the qualification rate of product.

Drawings

FIG. 1 is a schematic view of an electronic connector to be injection molded according to the present utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

FIG. 3 is a schematic view of a partial structure of the present utility model;

FIG. 4 is a schematic view of a partial structure of the present utility model;

FIG. 5 is a schematic view of the structure of the feed plate of the present utility model;

FIG. 6 is a schematic view of the structure of the feed cylinder of the present utility model;

FIG. 7 is a cross-sectional view of a feed cartridge of the present utility model;

FIG. 8 is a schematic view of the structure of the upper mold plate of the present utility model;

FIG. 9 is a schematic view of the lower die plate of the present utility model;

FIG. 10 is a cross-sectional view of a lower die plate of the present utility model;

FIG. 11 is a schematic view of the bottom structure of the lower die plate of the present utility model;

FIG. 12 is a top view of the lower die plate of the present utility model;

FIG. 13 is an enlarged view of the utility model at A of FIG. 9;

FIG. 14 is an enlarged view of the utility model at B of FIG. 12;

FIG. 15 is a schematic view of the structure of the upper molding block of the present utility model;

FIG. 16 is a schematic view of the structure of the bottom of the upper molding block of the present utility model;

FIG. 17 is a schematic view of the structure of the lower molding block of the present utility model;

FIG. 18 is a cross-sectional view of a lower molding block of the present utility model;

reference numerals illustrate:

1. a bottom plate; 2. a lower template; 3. an upper template; 4. a top plate; 5. a lifting plate; 6. a feed plate; 7. an upper clamping groove; 8. a lower clamping groove; 9. a clamping block is arranged; 10. a lower clamping block; 11. an outer feed hole; 12. a through hole; 13. a feed cylinder; 131. a feed column; 132. a fixing plate; 133. a material bearing part; 134. a feed channel; 14. an upper molding block groove; 15. an upper molding block clamping groove; 16. an upper cooling flow passage; 17. an upper molding block; 171. a bump is arranged; 18. a lower molding block groove; 19. pressing grooves of the lower forming blocks; 20. a lower cooling flow passage; 21. a main cold material well; 22. a main flow passage; 23. an exhaust hole; 24. a first auxiliary cold material well; 25. a first secondary flow passage; 26. a second secondary runner; 27. a second auxiliary cold material well; 28. a jacking rod groove; 29. a first side flow passage; 30. a spring hole; 31. a jacking hole; 32. a lower molding block; 321. a lower bump; 33. a second side flow passage; 34. a feed inlet; 35. a cavity; 36. a push rod; 37. a lifting rod; 38. a spring; 39. an exhaust rod; 40. a thimble; 41. a guide rod.

Detailed Description

The utility model will be further described with reference to examples of embodiments shown in the drawings.

As shown in fig. 2-4, which are schematic structural views of the present utility model, it is generally used for injection molding the electronic connector shown in fig. 1, which is of a top-bottom structure, so that the electronic connector can be injection molded by opening the top and bottom molds. The device mainly comprises a bottom plate 1, a lower die plate 2, an upper die plate 3, a top plate 4, a lifting plate 5 and a feeding plate 6. The bottom plate 1 is a rectangular metal plate and is fixed on the die table for supporting the rest of the die structure. The lower bolster 2 is fixed at the top of bottom plate 1 through the mode of bolt-up, and cope match-plate pattern 3 liftable setting is at the top of lower bolster 2, and cooperatees with lower bolster 2 and use, and in the compound mode, cope match-plate pattern 3 descends to laminating mutually with lower bolster 2, and in the cavity between cope match-plate pattern 3 and lower bolster 2 was poured into to the molten sizing material, after the cooling shaping, in the die sinking stage, cope match-plate pattern 3 risees and keeps away from lower bolster 2, and the finished product of moulding plastics is taken out from the space between cope match-plate pattern 3 and the lower bolster 2. The top plate 4 is fixed on top of the upper die plate 3, and the upper die plate 3 and the lower die plate 2 are positioned between the top plate 4 and the bottom plate 1 for playing a role in protecting the upper die plate 3 and the lower die plate 2. Lifting plate 5 liftable ground sets up in the below of bottom plate 1, and bottom plate 1 below is provided with the jacking cylinder, and the jacking cylinder links to each other with lifting plate 5 for drive lifting plate 5 and go up and down, lifting plate 5 are used for the in-process jack-up cope match-plate pattern 3 of die sinking. The feeding plate 6 is fixed on the top of the top plate 4, and the feeding plate 6 is used for fixing the feeding cylinder 13, so that the injection of external molten sizing material is facilitated.

The upper clamping groove 7 is formed in the outer side of the upper template 3, and the lower clamping groove 8 is formed in the outer side of the lower template 2. The upper clamping block 9 is in a shape of a Chinese character 'tu', is fixed in the upper clamping groove 7 in a screw fastening mode, and is arranged downwards. The lower fixture block 10 is "concave" font, fixes in lower draw-in groove 8 through the mode of screw fastening, and cooperatees with last fixture block 9, and at the compound die stage of opening the mould, cope match-plate pattern 3 can frequently rise at the top of lower bolster 2, in the lift in-process, go up fixture block 9 and can insert down in the fixture block 10, through setting up fixture block 9 and lower fixture block 10, fix a position cope match-plate pattern 3.

As shown in fig. 5, the feed plate 6 is schematically structured, and the feed plate 6 is fastened to the top of the top plate 4 by means of bolts. The outer feed hole 11 is formed in the top of the feed plate 6, and the through hole 12 is formed in the bottom of the outer feed hole 11 and penetrates through the feed plate 6. As shown in fig. 6, the feed cylinder 13 includes a feed column 131, a fixing plate 132, a receiving part 133, and a feed passage 134. The fixing plate 132 has a diameter equal to that of the outer feed hole 11 and is fixed to the bottom of the outer feed hole 11 by means of bolt fastening. The feeding column 131 is integrally connected to the bottom of the fixing plate 132 and penetrates through the through hole 12, the top plate 4 and the upper template 3, the diameter of the feeding column 131 is equal to that of the through hole 12, and molten colloidal particles are prevented from pouring into the outer feeding hole 11 and leaking out of a gap between the feeding column 131 and the through hole 12. As shown in fig. 7, which is a cross-sectional view of the feeding barrel 13, the material bearing portion 133 is formed at the top of the fixing plate 132, the material bearing portion 133 is in a concave arc shape, the cross section of the feeding channel 134 is in an isosceles trapezoid shape, and the upper bottom of the isosceles trapezoid is connected with the material bearing portion 133 (during actual pouring, molten rubber is poured into the outer feeding hole 11, and because the material bearing portion 133 is in a concave arc shape, the rubber in the outer feeding hole 11 is accumulated in the material bearing portion 133, and flows into the feeding channel 134 under the action of gravity, and because the upper part of the feeding channel 134 is small and the lower part is large, the flow of the rubber is aggravated, and the feeding channel 134 is prevented from being blocked by the cooling of the rubber in advance).

As shown in fig. 8, the upper molding block groove 14 is formed in the upper molding plate 3, and in actual circumstances, the number of upper molding block grooves 14 can be increased appropriately according to the number of points at which the mold is actually opened and the size of the entire mold. The upper molding block clamping groove 15 is formed on the outer side of the upper molding block groove 14. As shown in fig. 15 and 16, the upper molding block 17 is schematically shown in the structure of the upper molding block 17, and the upper molding block 17 is used for molding the top structure of the electronic connector shown in fig. 1, and the upper protruding block 171 is integrally connected to the top of the upper molding block 17 and is matched with the upper molding block clamping groove 15, and the upper molding block 17 is inserted into the upper molding block groove 14, at this time, the upper protruding block 171 is clamped in the upper molding block clamping groove 15, and in the mold opening stage, the upper molding block 17 is synchronously lifted along with the jacking of the upper mold plate 3, so as to be far away from the lower mold plate 2, and because the electronic connector shown in fig. 1 is opened in the vertical direction, the upper molding block 17 is embedded in the upper mold plate 3. The upper cooling runner 16 is arranged in the upper template 3 and used for preserving heat of the upper template 3, hot water is circularly introduced into the upper cooling runner 16, the initial temperature of the mold is ensured in the pouring stage, the solidification of the sizing material which enters the mold without forming is avoided, after pouring forming, the upper template 3 is preserved by the introduced hot water, and the cold shrinkage of the formed injection molding part caused by too fast cooling is avoided.

As shown in fig. 9-11, which are schematic structural views of the lower die plate 2, a lower molding block groove 18 is formed at the top of the lower die plate 2 and corresponds to the position of the upper molding block groove 14. The lower molding block pressing groove 19 is formed on the outer side of the lower molding block groove 18 and is positioned at the bottom of the lower molding block groove 18. As shown in fig. 17, the lower bump 321 is integrally connected to the bottom of the lower molding block 32 and is matched with the lower molding block pressing slot 19, and the lower molding block 32 is inserted into the lower molding block slot 18, and the lower molding block pressing slot 19 presses the lower bump 321, so as to avoid the lower molding block 32 from being pulled out synchronously during mold opening. The lower molding block 32 is internally provided with a cavity 35, the upper molding block 17 is attached to the lower molding block 32 in the mold closing stage, molten sizing material is injected into the cavity 35 of the lower molding block 32, the electronic connector is formed in an injection molding mode according to the matching of the convex structure of the upper molding block 17 and the concave structure of the lower molding block 32, the upper molding block 17 is removed along with the upper mold plate 3 in the mold opening stage, the lower molding block 32 and the lower mold plate 2 are kept motionless, and the ejector pins 40 eject products. The lower cooling flow passage 20 is provided in the lower die plate 2, and functions the same as the upper cooling flow passage 16.

As shown in fig. 13 and 14, the main flow channel 22 is formed at the top of the lower die plate 2, the main flow channel 22 is located in the middle of the lower molding block 32, and the external melted gum material flows into the main flow channel 22 through the feed channel 134. The main cooling well 21 is formed at the bottom of the main runner 22 and is located at the middle part of the main runner 22, the feeding channel 134 is connected with the main cooling well 21, the melted sizing material flows into the main runner 22 through the feeding channel 134, and after passing through the top plate 4 and the upper template 3, the front end of the sizing material may be solidified in advance, so that the main cooling well 21 is used for storing the solidified part of the front end of the sizing material. The first auxiliary cooling material wells 24 are arranged at two ends of the main runner 22, the first auxiliary runner 25 is connected with the main runner 22 and is close to the first auxiliary cooling material wells 24, the first auxiliary runner 25 is provided with four groups of molding blocks 32 respectively facing the four groups of molding blocks 32, and the sizing material is simultaneously conveyed to the four groups of molding blocks 32.

The second auxiliary flow passage 26 is connected to the end of the first auxiliary flow passage 25, the first auxiliary flow passage 25 is connected to the middle of the second auxiliary flow passage 26, and the second auxiliary flow passage 26 is parallel to the main flow passage 22. The second auxiliary cooling material well 27 is arranged at two ends of the second auxiliary flow channel 26, the first side flow channel 29 is connected with the second auxiliary flow channel 26 and is close to the second auxiliary cooling material well 27, as shown in fig. 14, two groups of first side flow channels 29 are arranged on the side face of the second auxiliary flow channel 26, the two groups of first side flow channels 29 are used for pouring the cavity 35 at the same time, compared with one flow channel, a formed product is free from cracks, and the internal stress of the product is small. And a second auxiliary cooling material well 27 is arranged for storing the sizing material cooled in advance in the second auxiliary flow passage 26. As shown in fig. 18, the lower molding block 32 is provided therein with a second side flow passage 33 and a feed port 34 which are communicated with each other. The second side runner 33 is connected with the first side runner 29, the feed inlet 34 is connected with the cavity 35, and the external molten sizing material enters the cavity 35 from the feed inlet 34 to be molded through the feed channel 134, the main runner 22, the first auxiliary runner 25, the second auxiliary runner 26, the first side runner 29 and the second side runner 33. The feed inlet 34 is inclined downwardly and tapers in diameter so that the rate of entry of the compound into the cavity 35 is increased at the same pressure, thereby reducing the injection time.

As shown in fig. 10, the exhaust hole 23 is formed at the bottom of the main cold material well 21 and penetrates through the lower die plate 2, the exhaust rod 39 is fixed on the lifting plate 5 and penetrates through the exhaust hole 23, in the die assembly process, gas in the upper die plate 3 and the lower die plate 2 can be exhausted from the exhaust hole 23, and in the casting process, the lifting plate 5 drives the exhaust rod 39 to rise to the bottom of the exhaust hole 23 so as to be used for shielding the exhaust hole 23 and prevent glue materials from leaking from the main cold material well 21 and the exhaust hole 23. The ejector rod groove 28 is formed in the second auxiliary flow channel 26, one end of the ejector rod 36 is fixed on the lifting plate 5, the other end of the ejector rod penetrates through the ejector rod groove 28, after mold closing molding, sizing materials remain in the main flow channel 22, the first auxiliary flow channel 25 and the second auxiliary flow channel 26, and the ejector rod groove 28 and the ejector rod 36 are arranged to eject products, and meanwhile, the ejector rod 36 ejects the sizing materials in the flow channels.

The ejector pin 40 is fixed on the lifting plate 5 and penetrates through the cavity 35, and the molded product is ejected out under the drive of the lifting plate 5 during mold opening. The jacking hole 31 penetrates through the lower die plate 2, and the spring hole 30 is formed in the bottom of the jacking hole 31. The lifting rod 37 is fixed on the lifting plate 5 and penetrates through the lifting hole 31, the top of the lifting rod 37 abuts against the bottom of the upper template 3, and the lifting rod 37 penetrates through the lifting hole 31 to lift the upper template 3 under the driving of the lifting plate 5. A spring 38 is sleeved on the lifting rod 37 and is arranged in the spring hole 30, and the spring 38 is used for assisting the lifting plate 5 to reset. One end of the guide rod 41 is fixed at the bottom of the bottom plate 1, and the other end penetrates the lifting plate 5 for guiding the lifting of the lifting plate 5.

The working principle of the utility model is as follows:

pouring molten sizing material into the outer feed hole 11, enabling the sizing material to enter the cavity 35 through the feed channel 134, the main runner 22, the first auxiliary runner 25, the second auxiliary runner 26, the first side runner 29 and the second side runner 33, finally forming by the feed port 34, jacking the upper template 3 by the jacking rod 37 under the driving of the lifting plate 5 after forming and pressure maintaining, separating the upper forming block 17 from the lower forming block 32, and simultaneously jacking the formed product and sizing material by the ejector pins 40 and the ejector pins 36.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (6)

1. A dual runner mold for an electronic connector, comprising:

the injection molding machine comprises a lower template (2), an upper template (3) arranged at the top of the lower template (2) in a lifting manner, a lower molding block (32) embedded in the lower template (2), an upper molding block (17) embedded in the upper template (3) and matched with the lower molding block (32), a cavity (35) formed in the lower molding block (32), a main runner (22) formed at the top of the lower template (2), a main cold material well (21) formed at the bottom of the main runner (22), a first auxiliary cold material well (24) arranged at two ends of the main runner (22), a first auxiliary runner (25) connected with the main runner (22), a second auxiliary cold material well (27) connected with the first auxiliary runner (25), a first side runner (29) connected with the second auxiliary runner (26), a second side runner (33) formed in the lower molding block (32) and a lifting port (34), and a thimble (40) capable of penetrating through the main runner (21) and being connected with the cavity (13);

the second side runner (33) links to each other with first side runner (29), feed inlet (34) link to each other with die cavity (35), main cold charge well (21) are located the middle part of sprue (22), first vice runner (25) are close to first vice cold charge well (24), first vice runner (25) link to each other with the middle part of second vice runner (26), first side runner (29) are close to second vice cold charge well (27), second vice runner (26) are parallel with sprue (22).

2. A dual runner mold for an electronic connector according to claim 1, wherein: the lifting device is characterized by further comprising a top plate (4) fixed at the top of the upper template (3), a feeding plate (6) fixed at the top of the top plate (4), a bottom plate (1) fixed at the bottom of the lower template (2), a lifting plate (5) arranged below the bottom plate (1) in a lifting manner, an outer feeding hole (11) formed in the top of the feeding plate (6) and a through hole (12) formed in the bottom of the outer feeding hole (11), wherein the ejector pin (40) is fixed at the top of the lifting plate (5) and penetrates through the bottom plate (1) and the lower template (2).

3. A dual runner mold for an electronic connector according to claim 2, wherein: the feeding cylinder (13) comprises a fixed plate (132) fixed at the bottom of the outer feeding hole (11), a feeding column (131) integrally connected to the bottom of the fixed plate (132) and penetrating through the through hole (12), a material bearing part (133) arranged at the top of the fixed plate (132) and a feeding channel (134) penetrating through the feeding column (131) and connected with the material bearing part (133), the material bearing part (133) is in a downward concave arc shape, the section of the feeding channel (134) is in an isosceles trapezoid shape, and the upper bottom of the isosceles trapezoid shape is connected with the material bearing part (133).

4. A dual runner mold for an electronic connector according to claim 1, wherein: the device is characterized by further comprising an upper clamping groove (7) formed in the outer side of the upper die plate (3), a lower clamping groove (8) formed in the outer side of the lower die plate (2), an upper clamping block (9) fixed in the upper clamping groove (7), a lower clamping block (10) fixed in the lower clamping groove (8), an upper cooling flow passage (16) arranged in the upper die plate (3) and a lower cooling flow passage (20) arranged in the lower die plate (2), wherein the upper clamping block (9) is matched with the lower clamping block (10).

5. A dual runner mold for an electronic connector according to claim 2, wherein: the cooling device further comprises an exhaust hole (23) formed in the bottom of the main cooling well (21), an exhaust rod (39) which is arranged in the exhaust hole (23) in a lifting mode, a push rod groove (28) formed in the bottom of the second auxiliary flow channel (26) and a push rod (36) which is arranged in the push rod groove (28) in a lifting mode, and the exhaust rod (39) and the push rod (36) are fixed at the top of the lifting plate (5).

6. A dual runner mold for an electronic connector according to claim 2, wherein: the feed inlet (34) is arranged obliquely downwards and is tapered in diameter.

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