CN113878803A

CN113878803A - Vertical injection mold

Info

Publication number: CN113878803A
Application number: CN202110956405.2A
Authority: CN
Inventors: 冉东旭; 康庆平
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-01-04

Abstract

The utility model discloses a vertical injection mold, which comprises an upper mold, a lower mold and an injection port, wherein a groove is formed in the position, corresponding to the injection port, of the outer surface of the upper end of the lower mold, the groove is designed in a circular structure, an elastic sheet is fixedly connected to the annular inner surface of the groove, the elastic sheet is integrally in a bowl-shaped design, the upper end of the annular outer surface of the elastic sheet is fixedly connected with the inner wall of the groove, a telescopic cavity is formed in the center of the groove, when the upper mold moves downwards and extrudes to a telescopic rod, the telescopic rod moves downwards along the telescopic cavity and stretches a tensile spring, the elastic sheet is in a bowl shape at the moment, after injection molding is completed, the telescopic rod moves upwards and resets under the action of elastic force generated by two groups of tensile springs, the center of the bottom end of the elastic sheet is bent upwards under the resisting force transmitted by the telescopic rod, so that a product is rapidly demolded, and the surface of the elastic sheet is smooth enough and integrally formed, so that the probability of burr occurrence of the injection molded product can be greatly reduced, thereby improving the production efficiency.

Description

Vertical injection mold

Technical Field

The utility model relates to the technical field of injection molding, in particular to a vertical injection mold.

Background

An injection mold is a tool for producing plastic products; and is also a tool for giving the plastic product complete structure and accurate dimension. Injection molding is a process used to mass produce parts of some complex shapes. Specifically, the plastic melted by heating is injected into a mold cavity from an injection molding machine at high pressure, and a formed product is obtained after cooling and solidification.

The vertical injection mold comprises a mold main body, an upper mold and a lower mold, wherein limiting needles are vertically and fixedly connected to four corners of the outer surface of one side of the upper mold, an upper end bearing block is fixedly mounted at the upper end of the mold main body, an upper mold component mounting block is fixedly mounted at the lower side of the upper end bearing block, the lower side end face of the upper mold component mounting block is fixedly connected with one end face of a base through a supporting column, and a lower mold core is mounted at the upper side end of the lower mold. In the integral structure, the lower die core and the lower die ejector block are movably combined, so that an injection-molded product can be separated from the whole lower die through the action of the lower die ejector block in the vertical direction after the injection molding of the product is finished, the phenomenon that partial factors of the product are scratched due to the contact with the lower die is avoided, the smoothness of the appearance of the product is improved, the practicability of the integral cutter is improved, the integral practicability is strong, and the using effect is better than that of the traditional mode.

1. The top block is adopted to lift and demould the product, but the plastic in the molten state has stronger fluidity, so that the plastic flows into a gap generated at the contact position of the top block and the lower die, and the product has more burrs after being formed, thereby increasing the rework amount of the product and further increasing the production cost of the product; 2. the material in the molten state can generate certain adhesive force with the die after being formed, so that the rapid demoulding of the product is not facilitated.

For this purpose, a vertical injection mold is proposed.

Disclosure of Invention

The present invention is directed to a vertical injection mold, which solves the above problems of the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a vertical injection mold, includes upper die, bed die, injection port, bed die upper end surface corresponds the position with the injection port and has seted up the recess, the recess is circular structural design, and its annular internal surface fixedly connected with shell fragment, the whole bowl form design that is of shell fragment, and its annular surface upper end and recess inner wall fixed connection, recess central point puts and has seted up flexible chamber, swing joint has the telescopic link about flexible intracavity portion, and telescopic link and flexible chamber correspond each other to match and be the U-shaped structural design, telescopic link upper end fixedly connected with tensile spring, and tensile spring upper end and flexible chamber fixed connection, flexible chamber both ends are open-ended state, the shell fragment is tin bronze material.

Preferably, the equal fixedly connected with sealing washer in annular internal surface of flexible chamber vertical part, and sealing washer and telescopic link are laminated each other, flexible chamber bottom also is the open mode, the inside cooling bath that has seted up of bed die, flexible chamber bottom communicates with each other with the cooling bath, telescopic link lower extreme outer surface fixedly connected with sealing rubber, the cooling bath is inside and be located the equal fixedly connected with one-way valve two in flexible chamber left and right sides, the cooling bath is network structure and distributes inside the bed die.

Preferably, the annular outer surface of the elastic sheet is provided with an air guide groove, the upper end of the air guide groove is provided with an air outlet, the middle position of the telescopic cavity is provided with an air conveying groove, the upper end and the lower end of the air conveying groove are both in an open state, the lower end of the air conveying groove is communicated with the telescopic cavity, the upper end of the air conveying groove is communicated with the external environment, the air conveying groove is in a T-shaped structural design, and two groups of one-way valves I are fixedly connected inside the air conveying groove.

Preferably, the right side of the cooling tank is fixedly connected with a connecting block, a through hole is formed in the middle of the connecting block and is communicated with the cooling tank, a movable cavity is formed in the upper end of the connecting block, a pendulum bob is rotatably connected to the inner portion of the movable cavity through a spring hinge, and a partition plate is fixedly connected to the lower end of the pendulum bob.

Preferably, the position where the pendulum bob is hinged with the movable cavity is located at five sixths from top to bottom of the pendulum bob, and the size of the partition plate is smaller than that of the through hole.

Preferably, a diaphragm is fixedly connected between the pendulum bob and the movable cavity.

Compared with the prior art, the utility model has the beneficial effects that:

1. by adding a series of structures such as the elastic sheet, the telescopic rod, the telescopic cavity, the tensile spring and the like into the device, when the upper die moves upwards, the telescopic rod moves upwards along the telescopic cavity under the action of the elastic force of the tensile spring and extrudes the elastic sheet, so that the center of the elastic sheet is raised, and a product is rapidly demoulded;

2. through adding a series of structures such as pendulum, diaphragm, baffle in the device when the telescopic link at the inside upward movement of flexible intracavity portion the inside also liquid flow of cooling bath thereby drive the pendulum and use the pin joint to rotate as the fulcrum through the resistance that produces between baffle and the liquid to it makes the product can fast demoulding to make the pendulum beat the bed die.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is an overall structural view of the present invention;

FIG. 2 is a structural view of an upper mold and a lower mold of the present invention;

FIG. 3 is a cross-sectional view taken at C-C of FIG. 2 in accordance with the present invention;

fig. 4 is a structural view of the elastic sheet of the present invention.

Description of reference numerals:

1. an upper die; 11. an injection port; 2. a lower die; 21. a telescoping chamber; 211. a seal ring; 212. a gas transmission groove; 213. sealing rubber; 22. a telescopic rod; 23. a groove; 24. a tension spring; 25. a cooling tank; 26. a one-way valve II; 3. a spring plate; 31. a gas guide groove; 32. an air outlet; 51. a joining block; 52. a movable cavity; 53. a diaphragm; 54. a spring hinge; 55. a pendulum bob; 56. a separator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution:

as shown in fig. 1, 2 and 4, a vertical injection mold comprises an upper mold 1, a lower mold 2 and an injection port 11, wherein a groove 23 is formed in the position, corresponding to the injection port 11, of the outer surface of the upper end of the lower mold 2, the groove 23 is designed to be of a circular structure, an elastic sheet 3 is fixedly connected to the inner surface of the annular portion of the lower mold, the elastic sheet 3 is integrally designed to be of a bowl shape, the upper end of the outer surface of the annular portion of the elastic sheet is fixedly connected to the inner wall of the groove 23, a telescopic cavity 21 is formed in the center of the groove 23, a telescopic rod 22 is movably connected to the inside of the telescopic cavity 21 vertically, the telescopic rod 22 and the telescopic cavity 21 are matched with each other and are designed to be of a U-shaped structure, a tensile spring 24 is fixedly connected to the upper end of the telescopic rod 22, the upper end of the tensile spring 24 is fixedly connected to the telescopic cavity 21, two ends of the telescopic cavity 21 are both in an open state, and the elastic sheet 3 is made of tin bronze.

By adopting the technical scheme, in order to reduce the probability of burrs of a product, during operation, the upper die 1 moves downwards under the driving of an injection molding machine to enable the injection port 11 to be aligned with the elastic sheet 3 at the upper end of the lower die 2, then the upper die and the lower die are closed, finally, a material is molded and cooled by the elastic sheet 3 and the upper die 1 to form the motor rear cover, the elastic sheet 3 is made of tin bronze and has good elasticity, when the upper die 1 moves downwards and extrudes the telescopic rod 22, the telescopic rod 22 moves downwards along the telescopic cavity 21 and stretches the tensile springs 24, at the moment, the elastic sheet 3 is in a bowl shape, after injection molding is completed, the telescopic rod 22 moves upwards and resets under the action of the elasticity generated by the two groups of tensile springs 24, at the moment, the bottom center position of the elastic sheet 3 is bent upwards under the resisting force transmitted by the telescopic rod 22, so that the product is rapidly demolded, because the surface of the elastic sheet 3 is smooth enough and integrally molded, the probability that deckle edge appears can greatly reduced by the product of moulding plastics from this to production efficiency has been improved.

As an embodiment of the present invention, as shown in fig. 2 and 3, the bottom end of the telescopic cavity 21 is also in an open state, a cooling groove 25 is formed in the lower mold 2, the bottom end of the telescopic cavity 21 is communicated with the cooling groove 25, a sealing rubber 213 is fixedly connected to the outer surface of the lower end of the telescopic rod 22, a two-way valve 26 is fixedly connected to both the left and right sides of the telescopic cavity 21 in the cooling groove 25, and the cooling grooves 25 are distributed in the lower mold 2 in a mesh structure.

Through adopting above-mentioned technical scheme, the equal fixed connection inlet tube in cooling bath 25 left and right both ends, when telescopic link 22 was along flexible chamber 21 up-and-down motion, the inside liquid of netted cooling bath 25 constantly was carried to the left from the right side under the restriction of two 26 of single-way valve under sealing rubber 213's effect to dispel the heat to the mould, thereby reduce product cooling shaping time.

As an embodiment of the present invention, as shown in fig. 2, the inner annular surface of the vertical portion of the telescopic cavity 21 is fixedly connected with a sealing ring 211, the sealing ring 211 and the telescopic rod 22 are attached to each other, the outer annular surface of the elastic sheet 3 is provided with an air guide groove 31, the upper end of the air guide groove 31 is provided with an air outlet 32, the middle position of the telescopic cavity 21 is provided with an air transmission groove 212, the upper end and the lower end of the air transmission groove 212 are both open, the lower end of the air transmission groove is communicated with the telescopic cavity 21, the upper end of the air transmission groove 212 is communicated with the external environment, the air transmission groove 212 is designed to be T-shaped, and the inside of the air transmission groove 212 is fixedly connected with two sets of one-way valves.

Through adopting above-mentioned technical scheme, based on above-mentioned embodiment, when telescopic link 22 upward movement under the elasticity effect of tensile spring 24, flexible chamber 21 keeps sealed relatively under the effect of sealing washer 211, gaseous this moment is through gas transmission groove 212 rethread air guide groove 31 encircleing shell fragment 3 a week, get rid of at last at gas outlet 32, the inside air in flexible chamber 21 reduces along with the reduction of bed die 2 temperature together, mutually supporting through above-mentioned structure makes telescopic link 22 with the lower gas of the inside temperature in flexible chamber 21 from the inside extrusion of flexible chamber 21 and cools down shell fragment 3, improve the cooling effect to shell fragment 3, thereby improve the drawing of patterns speed of product, when last mould 1 pushes down telescopic link 22, outside air is inhaled flexible chamber 21 inside through one-way valve and is used for the next time.

As an embodiment of the present invention, as shown in fig. 2, an engagement block 51 is fixedly connected to the right side of the cooling tank 25, a through hole is formed in the middle of the engagement block 51 and is communicated with the cooling tank 25, a movable cavity 52 is formed at the upper end of the engagement block 51, a pendulum 55 is rotatably connected to the inside of the movable cavity 52 through a spring hinge 54, and a partition plate 56 is fixedly connected to the lower end of the pendulum 55.

Through adopting above-mentioned technical scheme, based on above-mentioned embodiment, in operation, can drive baffle 56 and use spring hinge 54 to overturn clockwise as the fulcrum when liquid is from the inside left motion of turning right of cooling bath 25, thereby make pendulum 55 clockwise rotation simultaneously and hold the power under spring hinge 54's effect, when the inside liquid of cooling bath 25 no longer flows, pendulum 55 resets under spring hinge 54's elasticity and beats lower mould 2, thereby make shell fragment 3 produce certain vibration and make its inside finished product model can break away from shell fragment 3 fast, and then improved the ejection of compact speed of finished product model, indirect improvement output.

As an embodiment of the utility model, as shown in FIG. 2, the pendulum 55 is hinged to the movable cavity 52 at five sixths from top to bottom of the pendulum 55, and the size of the partition 56 is smaller than that of the through hole.

Through adopting above-mentioned technical scheme, just can overturn because baffle 56 receives the impact of rivers, in order to reduce the resistance that baffle 56 received when reseing, during operation, baffle 56 resets under the elasticity that spring hinge 54 produced after liquid is static, because baffle 56 size is less than the opening size this moment, can reset and drive pendulum 55 and beat the mould under the drive of spring hinge 54 after not receiving liquid impact, the swing speed of baffle 56 is less than the velocity of motion of pendulum 55 through the lever principle simultaneously to further improve the effect of beating of pendulum 55 to lower mould 2.

As an embodiment of the present invention, as shown in FIG. 2, a diaphragm 53 is fixedly connected between the pendulum 55 and the movable chamber 52.

By adopting the technical scheme, in order to prevent the liquid from flowing out of the movable cavity 52, in the working process, the diaphragm 53 is fixedly connected with the pendulum bob 55 and the movable cavity 52, and the arrangement of the diaphragm 53 effectively avoids the liquid flowing into the cooling tank 25 from leaking from the movable cavity 52, so that the stability of the device is improved.

The working principle is as follows: aiming at an injection molding machine using polyethylene raw materials, an upper mold 1 of the injection molding machine is driven to move downwards to enable an injection port 11 to align to an elastic sheet 3 at the upper end of a lower mold 2, then the upper mold and the lower mold are closed, finally materials are molded and cooled by the elastic sheet 3 and the upper mold 1 to form a motor rear cover, the elastic sheet 3 is made of tin bronze and has good elasticity, when the upper mold 1 moves downwards and extrudes a telescopic rod 22, the telescopic rod 22 moves downwards along a telescopic cavity 21 and stretches a tensile spring 24, at the moment, the elastic sheet 3 is bowl-shaped, after the injection molding is finished, the telescopic rod 22 moves upwards and resets under the elastic force generated by two groups of tensile springs 24, at the moment, the bottom center position of the elastic sheet 3 is bent upwards under the resisting force transmitted by the telescopic rod 22, so that products are rapidly demolded, the left end and the right end of a cooling groove 25 are fixedly connected with water inlet pipes, when the telescopic rod 22 moves upwards and downwards along the telescopic cavity 21, under the action of the sealing rubber 213, liquid in the mesh-shaped cooling groove 25 is continuously conveyed from the right side to the left side under the restriction of the one-way valve two 26, so that heat is dissipated from the mold, when the expansion link 22 moves upwards under the elastic force of the tensile spring 24, the expansion cavity 21 keeps relatively sealed under the action of the sealing ring 211, at the moment, gas passes through the gas conveying groove 212 and then surrounds the elastic sheet 3 for a circle through the gas guide groove 31, and finally is discharged from the gas outlet 32, air in the expansion cavity 21 is reduced along with the reduction of the temperature of the lower mold 2, the expansion link 22 presses the gas with lower temperature in the expansion cavity 21 out of the expansion cavity 21 through the mutual matching of the structures to cool the elastic sheet 3, the cooling effect on the elastic sheet 3 is improved, so that the demolding speed of a product is improved, when the expansion link 22 is pressed down by the upper mold 1, the external air is sucked into the expansion cavity 21 through the one-way valve one for use next time, when the liquid moves from the right to the left in the cooling tank 25, the partition plate 56 is driven to turn clockwise by taking the spring hinge 54 as a fulcrum, so that the pendulum bob 55 rotates clockwise and accumulates force under the action of the spring hinge 54, when the liquid in the cooling tank 25 does not flow any more, the pendulum bob 55 resets under the elastic force of the spring hinge 54 and beats the lower die 2, so that the elastic sheet 3 generates certain vibration and the finished product model in the elastic sheet 3 can be separated from the elastic sheet 3 quickly, the discharging speed of the finished product model is improved, the yield is improved indirectly, the arrangement of the diaphragm 53 effectively prevents the liquid flowing into the cooling tank 25 from leaking from the movable cavity 52, the partition plate 56 can turn over due to the impact of water flow, in order to reduce the resistance of the partition plate 56 during resetting, during operation, the partition plate 56 resets under the elastic force generated by the spring hinge 54 after the liquid is static, at this time, since the size of the partition plate 56 is smaller than that of the through opening, the partition plate can be reset and the pendulum bob 55 can be driven to beat the mold under the driving of the spring hinge 54 after the partition plate is not impacted by liquid, and meanwhile, the swinging speed of the partition plate 56 is smaller than the moving speed of the pendulum bob 55 through the lever principle, so that the beating effect of the pendulum bob 55 on the lower mold 2 is further improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a vertical injection mold, includes upper mold (1), bed die (2), injection port (11), its characterized in that: lower mould (2) upper end surface corresponds position with injection port (11) and sets up recess (23), recess (23) are circular structural design, and its annular internal surface fixedly connected with shell fragment (3), shell fragment (3) wholly is the design of bowl form, and its annular surface upper end and recess (23) inner wall fixed connection, recess (23) central point puts and has set up flexible chamber (21), swing joint has telescopic link (22) about flexible chamber (21) is inside, and telescopic link (22) and flexible chamber (21) correspond each other and match and be U-shaped structural design, telescopic link (22) upper end fixedly connected with tensile spring (24), and tensile spring (24) upper end and flexible chamber (21) fixed connection, flexible chamber (21) both ends are the open state, shell fragment (3) are the tin bronze material.

2. A vertical injection mould according to claim 1, characterized in that: the utility model discloses a flexible cavity (21) vertical part, including the lower mould (2), the equal fixedly connected with sealing washer (211) of annular internal surface of flexible cavity (21) vertical part, and sealing washer (211) and telescopic link (22) laminate each other, flexible cavity (21) bottom also is open-ended, cooling bath (25) have been seted up to lower mould (2) inside, flexible cavity (21) bottom communicates with each other with cooling bath (25), telescopic link (22) lower extreme outer fixed surface is connected with sealing rubber (213), cooling bath (25) are inside and are located the equal fixedly connected with one-way valve two (26) in flexible cavity (21) left and right sides, cooling bath (25) are network structure distribution inside lower mould (2).

3. A vertical injection mould according to claim 1, characterized in that: the elastic sheet (3) is provided with an air guide groove (31) on the annular outer surface, an air outlet (32) is formed in the upper end of the air guide groove (31), an air transmission groove (212) is formed in the middle of the telescopic cavity (21), the upper end and the lower end of the air transmission groove (212) are both in an open state, the lower end of the air transmission groove is communicated with the telescopic cavity (21), the upper end of the air transmission groove (212) is communicated with the external environment, the air transmission groove (212) is designed in a T-shaped structure, and two sets of one-way valves are fixedly connected inside the air transmission groove (212).

4. A vertical injection mould according to claim 2, characterized in that: cooling bath (25) right side fixedly connected with links up piece (51), link up and be equipped with the through-hole in the middle of piece (51), and communicate with each other with cooling bath (25), link up piece (51) upper end and seted up movable chamber (52), and activity chamber (52) inside is rotated through spring hinge (54) and is connected with pendulum (55), pendulum (55) lower extreme fixedly connected with baffle (56).

5. A vertical injection mould according to claim 4, characterized in that: the pendulum bob (55) is hinged with the movable cavity (52) and is positioned at five sixths from top to bottom of the pendulum bob (55), and the size of the partition plate (56) is smaller than that of the through hole.

6. A vertical injection mould according to claim 4, characterized in that: a diaphragm (53) is fixedly connected between the pendulum bob (55) and the movable cavity (52).