CN218366270U - Injection mold capable of realizing rapid demolding - Google Patents

Abstract

The utility model particularly relates to an injection mold of quick drawing of patterns, including the front mould, set up in the back mould of front mould lower extreme and set up the guiding mechanism between front mould and back mould, the front mould is provided with and is used for carrying out fashioned mechanism of loosing core to the side opening of injection molding, is provided with the aeration of being connected with ejection mechanism between front mould benevolence and the back mould benevolence and inserts, the one end and the outside air compression system intercommunication of inserting of ventilating, the other end and the die cavity intercommunication of inserting of ventilating, the injection molding is by behind ejection mechanism's ejecting back mould benevolence, blows off its drawing of patterns by the compressed air of inserting and blowing off of ventilating again. Through the structural arrangement, the injection molding piece is quickly demoulded and is convenient to operate; the arrangement of the core-pulling mechanism enables the reverse buckling position sizing material of the injection molding part to be thin, saves materials, shortens the production time and improves the molding processing efficiency.

Description

Injection mold capable of realizing rapid demolding

Technical Field

The utility model relates to an injection mold technical field, concretely relates to quick drawing of patterns's injection mold.

Background

In the field of mold injection, a back-off structure is often arranged in an injection molding part processed by a mold. Back-off refers to protrusions or depressions in the injection molded part that typically limit the problem of difficult mold release or easy sliding of the mold in the direction of opening the mold after the part is formed. Therefore, an additional mold structure is usually needed, for example, a side core-pulling mechanism is additionally arranged, the side core-pulling mechanism is driven by a guide mechanism to move along the lateral direction during mold opening to complete mold release, and an internal core lifter is additionally arranged to complete the molding of parts. However, the inverted buckle processing is realized through the improvement of the die structure, and the problems of complex die structure, difficult demoulding, low production efficiency and high production cost caused by large consumption of the sizing material still exist. Therefore, in order to solve the above problems of the existing injection mold, it is urgently needed to design an injection mold with simple structure, stable operation and high production efficiency.

Disclosure of Invention

In order to overcome the shortcoming and the inadequacy that exist among the prior art, the utility model aims to provide an injection mold of quick drawing of patterns, injection mold's simple structure, occupation space are little, can be applicable to the injection molding processing that has the back-off structure to the drawing of patterns is quick, machining efficiency is high and the operation is stable.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an injection mold of fast demoulding, includes the front mould, sets up in the back mould of front mould lower extreme and sets up the guiding mechanism between front mould and back mould, the front mould includes the shrouding and sets up in the front bezel of last shrouding lower extreme, the back mould includes the back template, sets gradually in the mould foot of back template lower extreme and lower shrouding and set up in the back template and the ejection mechanism between the shrouding down, its characterized in that:

a front mold core is arranged in the front mold plate, a rear mold core correspondingly matched with the front mold core is arranged in the rear mold plate, and a cavity for molding an injection molding piece is formed between the front mold core and the rear mold core;

the upper sealing plate is provided with a sprue bush, the front die core is provided with a sprue channel, and two ends of the sprue channel are respectively communicated with the sprue bush and the cavity;

the injection molding machine is characterized in that the front die is provided with a core pulling mechanism for molding side holes of an injection molding piece, a ventilation insert connected with the upper end of the ejection mechanism is arranged between the front die core and the rear die core, one end of the ventilation insert is communicated with an external air compression system, the other end of the ventilation insert is communicated with a cavity, the ejection mechanism is used for ejecting the injection molding piece out of the rear die core, and the ventilation insert is used for blowing out the injection molding piece ejected out of the rear die core by compressed air for demolding.

Furthermore, a mold core is arranged at one end, away from the air inlet of the external air compression system, of the ventilating insert, and the molded injection molding piece is sleeved outside the mold core.

Furthermore, a plurality of elastic pieces are arranged between the front template and the upper closing plate.

Further, the mechanism of loosing core carries out fashioned straight inlay needle (12), is used for carrying out fashioned first slant to the left side slant hole of injection molding and is used for carrying out fashioned second slant to the right side slant hole of injection molding and looses the core subassembly including being used for carrying out the fashioned straight needle (12) of inlaying to the front side hole of injection molding, straight inlay needle (12) and inlay the middle part of locating front mould benevolence, first slant is loosed core subassembly and second slant and is lain in the left side and the right side of straight inlay needle (12) respectively to the subassembly of loosing core.

Further, the subassembly of loosing core includes that the needle is inlayed to left slant and first needle file that contracts, the needle fixed connection is inlayed to the lower extreme and the left slant of first needle file that contracts, the needle is inlayed to left slant and one end of keeping away from first needle file that contracts is followed the slant and is set up the left side that inserts the core and be used for carrying out the shaping to the left side slant hole of injection molding, the upper end of first needle file that contracts runs through front mould benevolence, front mould board in proper order and is connected with last shrouding.

Further, the subassembly is loosed core to second slant includes that the needle is inlayed to the right slant and the needle file is contracted to the second, the needle fixed connection is inlayed to the lower extreme and the right slant of the needle file that contracts to the second, the needle is inlayed to the right slant and is kept away from the one end that the needle file contracts to the second and set up the right side that inserts the core along the slant and be used for carrying out the shaping to the right side slant hole of injection molding, the upper end of the needle file that contracts runs through front mould benevolence, front mould board in proper order and is connected with last shrouding.

Furthermore, the guide mechanism comprises a plurality of guide columns, and a first guide sleeve and a second guide sleeve which are correspondingly matched with the guide columns respectively, the upper ends of the guide columns are connected with the upper sealing plate, the lower ends of the guide columns are connected with the rear template, the first guide sleeve and the second guide sleeve are respectively sleeved on the corresponding guide columns and slide up and down relative to the guide columns, the first guide sleeve is embedded in the front template, and the second guide sleeve is embedded in the rear template.

Furthermore, the ejection mechanism comprises a bottom needle plate and a surface needle plate which are sequentially arranged at the upper end of the lower sealing plate, and a driving device for driving the bottom needle plate and the surface needle plate to move up and down, a plurality of guide rods and a plurality of straight ejector rods are arranged at the upper end of the bottom needle plate, the upper ends of the guide rods are connected with the rear template, the upper ends of the straight ejector rods are connected with the ventilation insert, and springs are sleeved on the guide rods.

Furthermore, the front template, the front mold core, the rear template and the rear mold core are respectively provided with a cooling channel, the front template is communicated with the cooling channel of the front mold core, and the rear template is communicated with the cooling channel of the rear mold core.

The beneficial effects of the utility model reside in that: the utility model discloses an injection mold of rapid demoulding inserts through being provided with between front mould benevolence and back mould benevolence and ventilate, ventilate and insert and communicate with outside air compression system, during the die sinking, ventilate and insert and blow off the drawing of patterns with its ejecting back mould benevolence by ejection mechanism with the injection molding that the shaping is good by compressed air again, make the drawing of patterns of injection molding quick, convenient operation. Moreover, the core pulling mechanism for molding the side holes of the injection molding piece is arranged on the front template and the front mold core, so that the back-off position sizing material of the injection molding piece is thin, the material is saved, the production time is shortened, and the molding processing efficiency is improved. The injection mold is simple in structure, small in occupied space, capable of being suitable for machining injection parts with the inverted buckle structures, fast in demolding, high in machining efficiency and stable in operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an exploded view of a portion of the structure of the present invention;

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

FIG. 4 isbase:Sub>A schematic structural view taken along section A-A in FIG. 3;

FIG. 5 is a schematic structural view of the combination of the core-pulling mechanism, the venting insert and the straight ejector rod;

fig. 6 is a top view of the present invention;

fig. 7 is a schematic structural view of a section B-B in fig. 6.

Fig. 8 is a schematic structural view of the section C-C in fig. 6.

The reference signs are: 1. an upper sealing plate; 2. a front template; 3. a rear template; 4. a mould leg; 5. a lower sealing plate; 6. a front mold core; 7. a rear mold core; 8. a sprue bush; 9. pouring a runner; 10. a breather insert; 11. a core; 12. a straight insert pin; 13. a left oblique insert pin; 14. a first needle retracting seat; 15. right oblique inserted pins; 16. a second needle retracting seat; 17. a guide post; 18. a first guide sleeve, 19 and a second guide sleeve; 20. a bottom needle plate; 21. a needle board; 22. a guide bar; 23. a straight ejector rod; 24. a spring; 25. a cooling channel; 26. an elastic member.

Detailed Description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying fig. 1 to 8, which are not intended to limit the present invention.

Examples

As shown in fig. 1-8, an injection mold for rapid demolding comprises a front mold, a rear mold arranged at the lower end of the front mold, and a guide mechanism arranged between the front mold and the rear mold, wherein the front mold comprises an upper sealing plate 1 and a front template 2 arranged at the lower end of the upper sealing plate 1, the rear mold comprises a rear template 3, mold feet 4 and a lower sealing plate 5 which are arranged at the lower end of the rear template 3 in sequence, and an ejection mechanism arranged between the rear template 3 and the lower sealing plate 5;

a front mold core 6 is arranged in the front mold plate 2, a rear mold core 7 correspondingly matched with the front mold core 6 is arranged in the rear mold plate 3, and a cavity for molding an injection molding piece is formed between the front mold core 6 and the rear mold core 7;

the upper sealing plate 1 is provided with a sprue bush 8, the front die core 6 is provided with a pouring channel, and two ends of the pouring channel are respectively communicated with the sprue bush 8 and the cavity;

the injection molding machine is characterized in that the front mold is provided with a core pulling mechanism for molding side holes of an injection molding piece, a ventilation insert 10 connected with the upper end of an ejection mechanism is arranged between the front mold core 6 and the rear mold core 7, one end of the ventilation insert 10 is communicated with an external air compression system, the other end of the ventilation insert 10 is communicated with a mold cavity, the ejection mechanism is used for ejecting the injection molding piece out of the rear mold core 7, and the ventilation insert 10 is used for blowing out the injection molding piece through blown compressed air for demolding.

Injection mold inserts 10 through being provided with between front mould benevolence 6 and back mould benevolence 7 of ventilating, insert 10 and outside air compression system intercommunication of ventilating, during the die sinking, insert 10 of ventilating by ejection mechanism with its ejecting back mould benevolence 7, blow off the drawing of patterns with the injection molding by compressed air again, make the drawing of patterns of injection molding quick, convenient operation. Moreover, through set up the mechanism of loosing core that is used for carrying out the shaping to the side opening of injection molding on front template 2 and front mould benevolence 6, make the back-off position sizing material of injection molding thin, economize the material and production time shortens, and shaping machining efficiency improves.

Further, a core 11 is arranged at one end, away from the air inlet of the external air compression system, of the ventilation insert 10, and the injection molding piece is sleeved outside the core 11 after being molded.

In this embodiment, a cavity for molding an injection molding part is formed between the front mold core 6 and the rear mold core 7, a mold core 11 is disposed at one end of the ventilation insert 10 away from the air inlet of the external air compression system, that is, the periphery of the mold core 11 and a space defined between the front mold core 6 and the rear mold core 7 are used for molding the injection molding part, the mold core 11 is sleeved after molding the injection molding part, the rear mold core 7 is ejected by the ejection mechanism after the mold is opened, and the mold is blown out by compressed air for demolding.

Further, a plurality of elastic members 26 are disposed between the front mold plate 2 and the upper closing plate 1. Specifically, the number of the elastic members 26 is four, the elastic members 26 are springs, the upper end surface of the front mold plate 2 is provided with a plurality of grooves for mounting the elastic members 26, and the elastic members 26 are mounted in the grooves and abut against the upper sealing plate 1.

Further, the mechanism of loosing core carries out fashioned straight inlay needle 12, is used for carrying out fashioned first slant to the left side slant hole of injection molding and is used for carrying out fashioned second slant to the right side slant hole of injection molding including being used for carrying out the leading hole of injection molding and looses the core subassembly, straight inlay needle 12 and inlay the middle part of locating front mould benevolence 6, first slant is loosed core subassembly and second slant and is loosed the core subassembly and be located the left side and the right side of straight inlay needle 12 respectively.

Further, first slant subassembly of loosing core includes that left slant inlays needle 13 and first needle file 14 that contracts, 13 fixed connection are inlayed to the lower extreme and the left slant of first needle file 14 that contracts, needle 13 is inlayed to left slant and one end that first needle file 14 was kept away from is used for carrying out the shaping to the left side slant hole of injection molding along the slant setting in the left side of inserting core 11, front mould benevolence 6, front mould board 2 are run through in proper order and are connected with last shrouding 1 to the one end of first needle file 14 that contracts, the upper end of first needle file 14. Furthermore, the second slant subassembly of loosing core includes that the needle 15 is inlayed to the right slant and the second needle seat 16 contracts, the lower extreme and the right slant of the second needle seat 16 are inlayed 15 fixed connection, the right slant is inlayed the needle 15 and is kept away from the right slant and set up the right side that inserts the core 11 and be used for carrying out the shaping to the right side slant hole of injection molding along the slant to the one end that the second needle seat 16 contracts, the upper end of second needle seat 16 runs through preceding mould benevolence 6, preceding template 2 in proper order and is connected with last shrouding 1.

In this embodiment, by arranging the straight insert pins 12 on the front mold plate 2 and the front mold core 6, the first inclined core pulling assembly and the second inclined core pulling assembly are respectively used for a front side hole, a left side inclined hole and a rear side inclined hole of an injection molding part, that is, the front side hole, the left side inclined hole and the rear side inclined hole of the injection molding part are respectively molded. Specifically, when the mold is opened, the front mold plate 2, the front mold core 6 and the upper sealing plate 1 move upwards to drive the first inclined core pulling assembly and the second inclined core pulling assembly to move therewith, and the first needle retracting seat 14 and the left inclined insert needle 13 are obliquely arranged towards the left side, the second needle retracting seat 16 and the right inclined insert needle 15 are obliquely arranged towards the right side, that is, the left inclined insert needle 13 and the right inclined insert needle 15 are respectively separated from the injection molding piece along respective oblique directions, so that the injection molding piece is suitable for inverted buckle injection molding processing.

Further, the guide mechanism comprises a plurality of guide posts 17, and a first guide sleeve 18 and a second guide sleeve 19 which are respectively correspondingly matched with the guide posts 17, the upper ends of the guide posts 17 are connected with the upper sealing plate 1, the lower ends of the guide posts 17 are connected with the rear template 3, the first guide sleeve 18 and the second guide sleeve 19 are respectively sleeved on the corresponding guide posts 17 and slide up and down relative to the guide posts 17, the first guide sleeve 18 is embedded in the front template 2, and the second guide sleeve 19 is embedded in the rear template 3. Specifically, the number of the guide posts 17 is four, the four guide posts 17 are respectively disposed at four corners of the mold, and two ends of the guide posts 17 respectively abut against the upper sealing plate 1 and the rear mold plate 3.

In the present embodiment, the guide mechanism is provided between the front mold plate 2 and the rear mold plate 3, so that the front mold plate 2 and the rear mold plate 3 can be guided stably and positioned accurately when the molds are opened and closed. When the die is opened and closed, the front die plate 2 and the upper sealing plate 1 are forced to move upwards or downwards, and at the moment, the front die plate 2 drives the first guide sleeve 18 to slide up and down relative to the rear die plate 3 along the guide post 17.

Further, the ejection mechanism comprises an end needle plate 20 and an area needle plate 21 which are sequentially arranged on the upper end of the lower sealing plate 5, and a driving device for driving the end needle plate 20 and the area needle plate 21 to move up and down, the upper end of the end needle plate 20 is provided with a plurality of guide rods 22 and a plurality of straight ejector rods 23, the upper ends of the guide rods 22 are connected with the rear template 3, the upper ends of the straight ejector rods 23 are connected with the ventilation insert 10, and springs 24 are sleeved on the guide rods 22.

In this embodiment, the number of the guide rods 22 and the number of the straight ejector rods 23 are four, the four guide rods 22 are respectively located at four corners of the bottom needle plate 20, the upper ends of the guide rods 22 penetrate through the surface needle plate 21 to be connected with the rear template 3, the four straight ejector rods 23 are respectively arranged at positions right below the corresponding air-permeable inserts, the upper ends of the straight ejector rods 23 are connected with the air-permeable inserts 10, and the lower ends of the straight ejector rods 23 penetrate through the surface needle plate 21 and are fixedly connected with the bottom needle plate 20. When the mold is opened, when the bottom needle plate 20 and the surface needle plate 21 are driven by the driving device to move upwards, the straight ejector rod 23 is driven to upwards eject the air-permeable insert out of the rear mold core 7, and compressed air introduced from one end of the air-permeable insert blows out an injection molding piece for demolding, so that the demolding process is convenient and rapid.

Furthermore, the front template 2, the front mold core 6, the rear template 3 and the rear mold core 7 are respectively provided with a cooling channel 25, the front template 2 is communicated with the cooling channel 25 of the front mold core 6, and the rear template 3 is communicated with the cooling channel 25 of the rear mold core 7. Through the structural design of above-mentioned cooling channel 25, can cool off preceding template 2, front mould benevolence 6, back template 3 and back mould benevolence 7 fast in making the coolant liquid pour into cooling channel 25 for the cooling shaping speed of the hot melt sizing material of injection moulding in the die cavity promotes the shaping efficiency.

The above-mentioned embodiment is the utility model discloses the implementation of preferred, in addition, the utility model discloses can also realize by other modes, not deviating from the utility model discloses any obvious replacement is all within the protection scope under the prerequisite of design.

Claims (9)

1. The utility model provides an injection mold of quick drawing of patterns which characterized in that: the die comprises a front die, a rear die and a guide mechanism, wherein the rear die is arranged at the lower end of the front die, the guide mechanism is arranged between the front die and the rear die, the front die comprises an upper sealing plate (1) and a front template (2) arranged at the lower end of the upper sealing plate (1), the rear die comprises a rear template (3), die feet (4) and a lower sealing plate (5) which are sequentially arranged at the lower end of the rear template (3), and an ejection mechanism is arranged between the rear template (3) and the lower sealing plate (5);

a front mold core (6) is arranged in the front mold plate (2), a rear mold core (7) correspondingly matched with the front mold core (6) is arranged in the rear mold plate (3), and a cavity for molding an injection molding piece is formed between the front mold core (6) and the rear mold core (7);

the upper sealing plate (1) is provided with a sprue bush (8), the front die core (6) is provided with a pouring channel (9), and two ends of the pouring channel (9) are respectively communicated with the sprue bush (8) and the die cavity;

the injection molding machine is characterized in that the front die is provided with a core pulling mechanism for molding side holes of an injection molding piece, a ventilation insert (10) connected with the upper end of the ejection mechanism is arranged between the front die core (6) and the rear die core (7), one end of the ventilation insert (10) is communicated with an external air compression system, the other end of the ventilation insert (10) is communicated with a die cavity, the ejection mechanism is used for ejecting the injection molding piece out of the rear die core (7), and the ventilation insert (10) is used for blowing out the injection molding piece for demolding through blown compressed air.

2. The rapid-release injection mold according to claim 1, wherein: the ventilation insert (10) is provided with a core (11) at one end far away from the air inlet of an external air compression system, and the injection molding piece is sleeved outside the core (11) after being molded.

3. The rapid-release injection mold according to claim 1, wherein: a plurality of elastic pieces (26) are arranged between the front template (2) and the upper sealing plate (1).

4. The rapid-release injection mold of claim 2, wherein: the mechanism of loosing core carries out fashioned straight inlay needle (12), is used for carrying out fashioned first slant to the left side slant hole of injection molding and looses the core subassembly and be used for carrying out fashioned second slant to the right side slant hole of injection molding including being used for carrying out the front side hole of injection molding, straight inlay needle (12) and inlay the middle part of locating front mould benevolence (6), first slant is loosed core subassembly and second slant and is loosed core the subassembly and be located the left side and the right side of straight inlay needle (12) respectively.

5. The rapid-release injection mold according to claim 4, wherein: first slant subassembly of loosing core includes that left slant inlays needle (13) and first needle file (14) that contracts, needle (13) fixed connection is inlayed to the lower extreme and the left slant of first needle file (14) that contracts, needle (13) are inlayed to left slant one end of keeping away from first needle file (14) and are followed the slant and set up the left side that inserts core (11) and be used for carrying out the shaping to the left side slant hole of injection molding, the upper end of first needle file (14) that contracts runs through front mould benevolence (6), front form (2) in proper order and is connected with last shrouding (1).

6. The rapid-release injection mold of claim 5, wherein: the subassembly of loosing core of second slant includes that needle (15) and second contract needle file (16) are inlayed to the right slant, needle (15) fixed connection is inlayed to the lower extreme and the right slant of second contract needle file (16), needle (15) are inlayed to the right slant and one end that second contract needle file (16) was kept away from is inlayed to the right slant sets up the right side that inserts core (11) and is used for carrying out the shaping to the right side slant hole of injection molding along the slant, the upper end that second contracted needle file (16) runs through front mould benevolence (6), front form (2) in proper order and is connected with upper seal plate (1).

7. The rapid-release injection mold of claim 1, wherein: the guide mechanism comprises a plurality of guide columns (17) and a first guide sleeve (18) and a second guide sleeve (19) which are matched with the guide columns (17) correspondingly respectively, the upper ends of the guide columns (17) are connected with the upper sealing plate (1), the lower ends of the guide columns (17) are connected with the rear template (3), the first guide sleeve (18) and the second guide sleeve (19) are respectively sleeved on the corresponding guide columns (17) and slide up and down relative to the guide columns (17), the first guide sleeve (18) is embedded in the front template (2), and the second guide sleeve (19) is embedded in the rear template (3).

8. The rapid-release injection mold according to claim 1, wherein: the ejection mechanism comprises an end needle plate (20) and a face needle plate (21) which are sequentially arranged at the upper end of a lower sealing plate (5) and a driving device for driving the end needle plate (20) and the face needle plate (21) to move up and down, wherein the upper end of the end needle plate (20) is provided with a plurality of guide rods (22) and a plurality of straight ejector rods (23), the upper ends of the guide rods (22) are connected with a rear template (3), the upper ends of the straight ejector rods (23) are connected with an air-permeable insert (10), and springs (24) are sleeved on the guide rods (22).

9. The rapid-release injection mold according to claim 1, wherein: the mold is characterized in that the front template (2), the front mold core (6), the rear template (3) and the rear mold core (7) are respectively provided with a cooling channel (25), the front template (2) is communicated with the cooling channel (25) of the front mold core (6), and the rear template (3) is communicated with the cooling channel (25) of the rear mold core (7).

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