CN212888686U - Injection mold for producing high-pixel mobile phone lens barrel - Google Patents

Abstract

The utility model discloses an injection mold for producing a high-pixel mobile phone lens barrel, relating to the technical field of injection molds; comprises an upper die, a lower die, a pouring head, a flow channel, a forming groove and a pull pin; the pouring head comprises a cup body, a cooling injection nozzle, a discharge channel, a cooling channel, an inlet channel and an outlet channel, wherein the upper end of the cooling injection nozzle is fixedly connected to the bottom of the cup body; the inlet channel and the outlet channel are both located in the wall of the cup body, one end, away from the cooling channel, of the inlet channel is located on the upper edge of the cup body, and one end, away from the cooling channel, of the outlet channel is located on the upper edge of the cup body. The utility model provides an injection mold for producing high pixel cell-phone camera lens section of thick bamboo avoids the raw materials whereabouts in the mould. When the cold material is pulled out, the injection molding material can not fall.

Description

Injection mold for producing high-pixel mobile phone lens barrel

Technical Field

The utility model belongs to the technical field of injection mold, in particular to injection mold for producing a high pixel cell-phone camera lens section of thick bamboo.

Background

A cell-phone camera lens section of thick bamboo adopts injection moulding, and the injection molding material pours into between mould and the lower mould through last mould among the current injection mold, goes up mould upward movement after the shaping, goes up the intraoral injection molding material of pouring of mould and sometimes not cools off completely, because the temperature of going up the mould is than higher, consequently, when last mould upward movement, falls the lower mould easily on the intraoral injection molding material that is the liquid form of pouring into a mould to lead to the fact the influence to subsequent moulding plastics.

Disclosure of Invention

The utility model aims at overcoming the shortcoming of the easy whereabouts of raw materials in the mould in the prior art, providing an injection mold for producing high pixel cell-phone camera lens section of thick bamboo, avoid going up the raw materials whereabouts in the mould.

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

an injection mold for producing a high-pixel mobile phone lens barrel comprises an upper mold, a lower mold, a casting head which is positioned on the upper mold and used for injecting injection molding materials and has a cooling function, a runner which is positioned on the upper side of the lower mold and one end of which corresponds to the lower end of the casting head, a molding groove positioned at the other end of the runner, and a drawing needle which is positioned on the lower mold and used for drawing out cold materials in the lower end of the casting head; the pouring head comprises a cup body, a cooling injection nozzle, a discharge channel, a cooling channel, an inlet channel, a discharge channel, a valve, a water pump, an air pump and a recovery water tank, wherein the upper end of the cooling injection nozzle is fixedly connected to the bottom of the cup body; the inlet channel and the outlet channel are both positioned in the cup wall of the cup body, one end of the inlet channel, which is far away from the cooling channel, is positioned at the upper edge of the cup body, and one end of the outlet channel, which is far away from the cooling channel, is positioned at the upper edge of the cup body; the valve comprises a valve body, a chute positioned in the valve body, a cooling water interface connected to the lower end of the chute, a gas interface connected to the upper end of the chute, a floating ball which is connected in the chute in a sliding manner and used for blocking the cooling water interface and the gas interface, and a gas-water dual-purpose channel connected to the middle part of the chute; the air-water dual-purpose channel is connected with the inlet channel, the discharge channel is connected with the recovery water tank, the water pump is connected with the cooling water interface, the air pump is connected with the air interface, and the water pump is connected with the recovery water tank. After the injection molding material is injected, cooling water is introduced into the cooling channel, the injection molding material in the discharging channel is solidified to form cold material, when the upper die moves upwards, the cold material is pulled out by pulling the needle, and if the liquid injection molding material in the cup body falls, the liquid injection molding material needs to pass through the long and narrow discharging channel, so that the injection molding material is not easy to fall in the demolding process.

Preferably, the discharging channel comprises a thin section, a hemispherical sealing groove positioned at the lower end of the thin section, a thick section positioned below the sealing groove, and a transition section which is used for connecting the upper end of the thick section and the lower edge of the sealing groove and is in a circular truncated cone shape;

the radius of the sealing groove is smaller than that of the thick section, and the radius of the thin section is smaller than that of the sealing groove;

the transition section, the sealing groove and the thin section are all positioned in the bottom wall of the cup body, and the thick section is positioned in the cooling injection nozzle;

the cooling channels are spirally arranged around the thick section;

a hemispherical sealing block matched with the sealing groove is arranged in the discharging channel, a plurality of elastic pieces are fixedly connected to the outer edge of the lower side of the sealing block, and one end of each elastic piece, far away from the sealing block, is connected to the lower edge of the transition section;

the pull pin is connected with the lower die in a sliding mode, and an electric cylinder used for moving the pull pin up and down is arranged in the lower die. During pouring, the pulling needle is not inserted into the discharging channel, so that the smooth pouring is ensured, and the pulling needle is inserted after the pouring is finished.

Preferably, the needle comprises a needle body, a notch positioned at the upper end of the needle body, a plug positioned in the notch, a necking positioned at the upper end of the notch, a sealing conical surface positioned at the upper end of the notch and used for being matched with the notch so as to seal the opening of the notch, and an air passage communicated with the upper end and the lower end of the notch; a cavity is arranged in the lower die, a piston is connected in the cavity in a sliding manner, an air inlet used for inputting high-pressure gas is arranged on the cavity, a communicating air passage is arranged in the lower die, one end of the communicating air passage is connected to the cavity, the other end of the communicating air passage is communicated with the air passage, a spring used for applying upward force to the piston is arranged in the cavity, a piston rod is inserted at the upper side of the lower die, the lower end of the piston rod is connected to the piston, a second communicating air passage is connected to the cavity, one end, far away from the cavity, of the second communicating air passage is communicated with the communicating air passage, a second communicating air passage and a lower limiting bulge are fixedly connected to the cavity, the second communicating air passage is located above the; when the upper die and the lower die are matched, the piston abuts against the lower limiting bulge and blocks the end part of the second communication air passage; when the upper die and the lower die are separated, the piston abuts against the second communication air passage and blocks the air inlet and the end part of the communication air passage.

Preferably, the number of flow channels is four. The runners are arranged in an annular array centered on the axis of the tapping channel.

Preferably, the number of the forming grooves is eight, and each flow channel corresponds to two forming grooves.

Preferably, two opposite sides of each forming groove are provided with a first C-shaped channel, two ends of each first C-shaped channel are provided with a first passageway communicated with the corresponding forming groove, one side of each forming groove is provided with a second C-shaped channel, the two first C-shaped channels corresponding to the forming grooves correspond to two ends of the second C-shaped channel respectively, and the middle of each first C-shaped channel is provided with a second passageway communicated with the corresponding end of the second C-shaped channel.

Preferably, the forming groove coincides with the circle center of the first C-shaped flow channel corresponding to the forming groove, and the forming groove coincides with the circle center of the second C-shaped flow channel corresponding to the forming groove.

Preferably, the first passages are arranged in an annular array with the circle center of the corresponding molding groove as the center, and the second passages are arranged in an annular array with the circle center of the corresponding molding groove as the center.

Preferably, the lower die is provided with a guide post, the lower end of the guide post is fixedly connected to the lower die, and the upper end of the guide post is inserted into the upper die and is in sliding connection with the upper die. The stability of the upper die is increased.

The utility model has the advantages that: the utility model provides an injection mold for producing high pixel cell-phone camera lens section of thick bamboo avoids the raw materials whereabouts in the mould. When the cold material is pulled out, the injection molding material can not fall.

Drawings

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

FIG. 2 is a top view of the lower die;

fig. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of FIG. 3 with the cooling channels, inlet channels, and outlet channels hidden;

FIG. 5 is an enlarged view of FIG. 4 at A;

FIG. 6 is a schematic view of needle withdrawal;

FIG. 7 is an enlarged view of FIG. 4 at B;

FIG. 8 is a schematic view after injection of the injection molding material and after insertion and removal of the needle;

FIG. 9 is an enlarged view at C of FIG. 8;

FIG. 10 is a schematic illustration of FIG. 7 after demolding;

FIG. 11 is a schematic view of the seal block pushing the cold charge downward during demolding;

FIG. 12 is a schematic view of air entering the upper end of the thick section as the cold burden is being pulled.

In the figure: the device comprises an upper die 1, a lower die 2, a pouring head 3, a flow channel 4, a cup body 5, a cooling channel 7, an inlet channel 8, a discharge channel 9, a pull pin 11, an electric cylinder 12, a thin section 13, a sealing groove 14, a thick section 15, a transition section 16, a sealing block 17, an elastic piece 18, a cooling material injection nozzle 19, a first C-shaped flow channel 20, a first passage 21, a second C-shaped flow channel 22, a second passage 23, a guide column 24, a needle body 25, a notch 26, a plug 27, a reducing 28, a sealing conical surface 29, an air channel 30, a cavity 31, a piston 32, an air inlet 33, a communication air channel 34, a spring 35, a piston rod 36, a second communication air channel 37, an upper limiting bulge 38, a lower limiting bulge 39, a water pump 40, an air pump 41, a recovery water tank 42, a valve body 43, a chute 44, a cooling water interface 45, an air interface 46, a floating ball 47, an air-water dual-purpose channel, Forming a recess 52.

Detailed Description

The invention will be further explained in detail with reference to the drawings and the following detailed description:

example (b):

referring to fig. 1 to 12, an injection mold for producing a high-pixel mobile phone lens barrel includes an upper mold 1, a lower mold 2, a casting head 3 with a cooling function and located on the upper mold 1 for injecting an injection molding material, a runner 4 located on the upper side of the lower mold 2 and having one end corresponding to the lower end of the casting head 3, a molding groove 52 located at the other end of the runner 4, and a drawing pin 11 located on the lower mold 2 for drawing out a cold material 51 inside the lower end of the casting head 3. Also comprises a valve, a water pump 40, an air pump 41 and a recycling water tank 42.

The lower die 2 is provided with a guide post 24 of which the lower end is fixedly connected on the lower die 2, and the upper end of the guide post 24 is inserted into the upper die 1 and is connected with the upper die 1 in a sliding way.

The pouring head 3 comprises a cup body 5, a cooling material injection nozzle 19 with the upper end fixedly connected with the bottom of the cup body 5, a discharge channel 50 penetrating through the bottom of the cup body 5 and the cooling material injection nozzle 19, a cooling channel 7 spirally arranged around the discharge channel 50, an inlet channel 8 connected with one end of the cooling channel 7, and an outlet channel 9 connected with the other end of the cooling channel 7.

The inlet channel 8 and the outlet channel 9 are both positioned in the wall of the cup body 5, one end of the inlet channel 8 far away from the cooling channel 7 is positioned on the upper edge of the cup body 5, and one end of the outlet channel 9 far away from the cooling channel 7 is positioned on the upper edge of the cup body 5.

The discharging channel 50 comprises a thin section 13, a semispherical sealing groove 14 positioned at the lower end of the thin section 13, a thick section 15 positioned below the sealing groove 14, and a transition section 16 which is used for connecting the upper end of the thick section 15 and the lower edge of the sealing groove 14 and is in a circular truncated cone shape. The radius of the sealing groove 14 is smaller than that of the thick section 15, and the radius of the thin section 13 is smaller than that of the sealing groove 14. The transition section 16, the sealing groove 14 and the thin section 13 are all positioned in the bottom wall of the cup body 5, and the thick section 15 is positioned in the cooling injection nozzle 19. The cooling channels 7 are arranged helically around the thick section 15.

A hemispherical sealing block 17 which is matched with the sealing groove 14 is arranged in the discharging channel 50, a plurality of elastic pieces 18 are fixedly connected to the outer edge of the lower side of the sealing block 17, and one end, far away from the sealing block 17, of each elastic piece 18 is connected to the lower edge of the transition section 16.

The pulling needle 11 is connected with the lower die 2 in a sliding mode, and an electric cylinder 12 used for moving the pulling needle 11 up and down is arranged in the lower die 2.

The pulling needle 11 comprises a needle body 25, a notch 26 at the upper end of the needle body 25, a plug 27 in the notch 26, a throat 28 at the upper end of the notch 26, a sealing conical surface 29 at the upper end of the notch 26 for matching with the notch 26 to seal the opening of the notch 26, and an air passage 30 communicated with the upper end and the lower end of the notch 26.

Be equipped with cavity 31 in lower mould 2, sliding connection has piston 32 in cavity 31, be equipped with the air inlet 33 that is used for inputing high-pressure gas on cavity 31, be equipped with intercommunication air flue 34 in the lower mould 2, 34 one end of intercommunication air flue is connected on cavity 31, the 34 other end of intercommunication air flue and the 30 intercommunication of air flue, be equipped with the spring 35 that is used for applying ascending power to piston 32 in the cavity 31, the upside of lower mould 2 is inserted and is equipped with piston rod 36, the lower extreme of piston rod 36 is connected on piston 32, be connected with second intercommunication air flue 37 on the cavity 31, the one end and the intercommunication air flue 34 intercommunication of cavity 31 are kept away from to second intercommunication air flue 37, the rigid coupling has last spacing arch 38 and lower spacing arch 39 on cavity 31, it is located piston 32 top to go up spacing arch 38, lower spacing arch 39 is located piston.

When the upper die 1 and the lower die 2 are mated, the piston 32 abuts on the lower limit projection 39 and blocks the end of the second communicating air passage 37.

When the upper and lower dies 1 and 2 are disengaged, the piston 32 abuts on the upper limit projection 38 and blocks the air inlet 33 and the end of the communicating air passage 34.

The valve comprises a valve body 43, a chute 44 positioned in the valve body 43, a cooling water interface 45 connected to the lower end of the chute 44, a gas interface 46 connected to the upper end of the chute 44, a floating ball 47 which is connected in the chute 44 in a sliding manner and used for blocking the cooling water interface 45 and the gas interface 46, and a gas-water dual-purpose channel 48 connected to the middle part of the chute 44.

The air-water dual-purpose channel 48 is connected with the inlet channel 8, the discharge channel 9 is connected with the recovery water tank 42, the water pump 40 is connected with the cooling water interface 45, the air pump 41 is connected with the air interface 46, and the water pump 40 is connected with the recovery water tank 42.

The number of the flow passages 4 is four. The number of the molding recesses 52 is eight, and two molding recesses 52 correspond to each flow passage 4. The two opposite sides of each forming groove 52 are provided with a first C-shaped runner 20, the two ends of each first C-shaped runner 20 are provided with a first passageway 21 communicated with the corresponding forming groove 52, one side of each forming groove 52 is provided with a second C-shaped runner 22, the two first C-shaped runners 20 corresponding to the forming grooves 52 correspond to the two ends of the second C-shaped runner 22 respectively, and the middle part of each first C-shaped runner 20 is provided with a second passageway 23 communicated with the corresponding end of the second C-shaped runner 22. The forming groove 52 coincides with the center of the first C-shaped flow channel 20 corresponding thereto, and the forming groove 52 coincides with the center of the second C-shaped flow channel 22 corresponding thereto. The first passages 21 are arranged in an annular array centered on the center of the corresponding molding groove 52, and the second passages 23 are arranged in an annular array centered on the center of the corresponding molding groove 52.

Principle of embodiment:

during injection molding, the upper die 1 moves downwards to be matched with the lower die, the upper die extrudes the piston rod 36 downwards, the piston 32 moves downwards, the piston 32 abuts against the lower limiting protrusion 39, the piston 32 blocks the second communication air channel 37, the piston 32 is separated from the communication air channel 34, and the piston 32 is separated from the air inlet 33, which is shown in fig. 4, 5 and 7. The air inlet 33 inputs high-pressure air, and the sealing conical surface 29 is extruded on the necking 28 under the action of air pressure, and the upper end surface of the plug 27 is flush with the upper end surface of the needle body 25.

Then, injection molding materials are injected from the cooling injection nozzle 19, fall from the discharge channel 50, pass through the flow channel 4, the second C-shaped flow channel 22 and the first C-shaped flow channel 20 and then enter the forming groove 52, and the forming groove 52 is formed, and due to the fact that the four first passageways 21 are arranged around the forming groove 52, the injection molding materials can be evenly injected into the forming groove 52, and therefore the injection molding quality is guaranteed.

Then, while the injection molding material between the lower die 2 and the upper die 1 is not solidified, the electric cylinder 12 operates, the needle body 25 moves upwards, the needle body 25 presses the sealing block 17 upwards, the sealing block 17 moves upwards to press the sealing groove 14, and the elastic part 18 extends. It is noted that the injection molding compound in the outlet channel 50 is now divided into two upper and lower sections with the sealing block 17 as a boundary, which section is designated here as the section to be solidified 49, see fig. 8 and 9.

Then the water pump 40 operates, cooling water enters the sliding groove 44 in the valve body 43 from the cooling water interface 45, the floating ball 47 is extruded at the upper end of the sliding groove 44 under the action of buoyancy, the water is discharged from the air-water dual-purpose channel 48 and enters the channel 8, then the cooling water passes through the cooling channel 7, the section to be solidified in the thick section 15 is solidified together with the injection molding material between the upper die 1 and the lower die 2, and the injection molding material in the section to be solidified 49 is solidified to form cold material 51.

The upper mould 1 is then moved upwards, and the sealing block 17 exerts a downward force on the upper end of the cold charge 51 under the action of the elastic element 18, while there is friction between the needle 25 and the section to be solidified, and the cold charge 51 is pulled out of the thick section 15, attention! When the upper die 1 moves upwards, the piston rod 36 is disconnected from the upper die 1, the piston 32 moves upwards, the piston 32 is abutted against the upper limiting protrusion 38, the piston 32 is disconnected from the second communicating air passage 37, the piston 32 blocks the communicating air passage 34 and the air inlet 33, one end, close to the cavity 31, of the second communicating air passage 37 is communicated with the atmosphere, therefore, the air pressure in the notch 26 returns to normal pressure, the sealing conical surface 29 is disconnected from the necking 28, the plug 27 is in clearance fit with the notch 26, then, as the cold material 51 is slowly pulled out of the thick section 15, negative pressure is formed at the upper end of the thick section 15, air enters the upper end of the thick section 15 through the second communicating air passage 37, and the injection material in the thin section 13 is prevented from being carried downwards by the cold material 51 along with the pulling-out of the cold material 51, so that the injection material.

After the molding is finished, the water pump 40 stops operating, then the air pump 41 operates, the air pump 41 blows air into the upper end of the sliding groove 44, the floating ball 47 downwards extrudes at the lower end of the sliding groove 44, then the air is discharged from the air-water dual-purpose channel 48, cooling water in the cooling channel 7 is discharged into the recovery water tank 42, and the situation that injection molding materials are solidified in advance due to the fact that the temperature in the thick section 15 is too low in the later injection molding process is avoided.

Claims (7)

1. An injection mold for producing a high-pixel mobile phone lens barrel is characterized by comprising an upper mold, a lower mold, a pouring head which is positioned on the upper mold and used for injecting injection molding materials and has a cooling function, a flow channel which is positioned on the upper side of the lower mold and one end of which corresponds to the lower end of the pouring head, a molding groove positioned at the other end of the flow channel, and a drawing needle which is positioned on the lower mold and used for drawing out cold materials in the lower end of the pouring head;

the pouring head comprises a cup body, a cooling injection nozzle, a discharge channel, a cooling channel, an inlet channel, a discharge channel, a valve, a water pump, an air pump and a recovery water tank, wherein the upper end of the cooling injection nozzle is fixedly connected to the bottom of the cup body;

the inlet channel and the outlet channel are both positioned in the cup wall of the cup body, one end of the inlet channel, which is far away from the cooling channel, is positioned at the upper edge of the cup body, and one end of the outlet channel, which is far away from the cooling channel, is positioned at the upper edge of the cup body;

the valve comprises a valve body, a chute positioned in the valve body, a cooling water interface connected to the lower end of the chute, a gas interface connected to the upper end of the chute, a floating ball which is connected in the chute in a sliding manner and used for blocking the cooling water interface and the gas interface, and a gas-water dual-purpose channel connected to the middle part of the chute;

the air-water dual-purpose channel is connected with the inlet channel, the discharge channel is connected with the recovery water tank, the water pump is connected with the cooling water interface, the air pump is connected with the air interface, and the water pump is connected with the recovery water tank.

2. An injection mold for producing a high pixel cell phone lens barrel according to claim 1, wherein the number of the flow channels is four.

3. The injection mold for producing the lens barrel of the high pixel mobile phone according to claim 2, wherein the number of the forming grooves is eight, and each runner corresponds to two forming grooves.

4. An injection mold for producing a high pixel mobile phone lens barrel according to claim 3, wherein two opposite sides of each forming groove are provided with a first C-shaped channel, two ends of each first C-shaped channel are provided with a first passage communicated with the corresponding forming groove, one side of each forming groove is provided with a second C-shaped channel, two corresponding first C-shaped channels of the forming grooves respectively correspond to two ends of the second C-shaped channel, and the middle part of each first C-shaped channel is provided with a second passage communicated with the corresponding end of the second C-shaped channel.

5. The injection mold for producing the lens barrel of the high-pixel mobile phone according to claim 4, wherein the forming groove coincides with a center of a first C-shaped flow channel corresponding to the forming groove, and the forming groove coincides with a center of a second C-shaped flow channel corresponding to the forming groove.

6. The injection mold for producing a high pixel mobile phone lens barrel according to claim 5, wherein the first passageways are arranged in an annular array centered at the center of the corresponding forming groove, and the second passageways are arranged in an annular array centered at the center of the corresponding forming groove.

7. The injection mold for producing the high pixel mobile phone lens barrel according to claim 1, wherein the lower mold is provided with a guide post having a lower end fixedly connected to the lower mold, and an upper end of the guide post is inserted into and slidably connected with the upper mold.

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