CN112172041A

CN112172041A - Injection mold

Info

Publication number: CN112172041A
Application number: CN202011110369.XA
Authority: CN
Inventors: 沈军伟; 董志文
Original assignee: Wuxi Kailiding Automation Equipment Co ltd
Current assignee: Wuxi Kailiding Automation Equipment Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-05

Abstract

The invention relates to an injection mold, which comprises a water tank, wherein an annular track is fixed at the top of the water tank, a fixed mold is arranged on the track, the fixed mold provides power through a power device, the bottom end of the fixed mold is in rolling connection with the track through a moving wheel, first mold cavities are arranged on four side surfaces of the fixed mold, support frames are fixedly connected to two sides of the water tank, air cylinders are arranged on the two support frames, a movable mold seat is connected to the air cylinders in a transmission manner, a movable mold is arranged on one side, adjacent to the fixed mold, of the movable mold seat, a second mold cavity is arranged on one side, adjacent to the fixed mold, of the movable mold, and a material injection port is arranged on the other side, opposite to the fixed mold, in the injection mold, the switching between the two groups of first mold cavities is realized through the autorotati; the air cooling of the fixed die is realized through the heat dissipation channel, the water cooling of the fixed die is realized through water circulation, the heat dissipation efficiency of the fixed die is improved, and the production efficiency of the die is further improved.

Description

Injection mold

Technical Field

The invention relates to the field of molds, in particular to an injection mold.

Background

The die is various dies and tools for obtaining required products by injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and other methods in industrial production. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material.

Injection mold is usually to melt the raw materials injection die intracavity, form the product after cooling the shaping, when injection mold produces the comparatively complicated product of shape, can't realize the automatic drawing of patterns to the product, need the manual drawing of patterns of workman this moment, at this in-process, the mould is in wait state, the production efficiency of mould has been reduced, moreover, prior art's injection mold is when cooling the shaping to the raw materials, not only cooling efficiency is lower, it is inhomogeneous to cool down simultaneously, thereby influence the quality of product easily.

Disclosure of Invention

Aiming at the prior art, the technical problems to be solved by the invention are as follows: in order to overcome the defects of the prior art, an injection mold is provided.

In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides an injection mold, is equipped with the open-ended water tank including the top, the top of water tank is fixed with the annular track, be equipped with the quadrangular shaped cover half on the track, the bottom surface of cover half is the square, the cover half passes through power device and provides power, the bottom of cover half is through removing wheel and track roll connection, all be equipped with first die cavity on four sides of cover half, the equal fixedly connected with support frame in both sides of water tank, two support frames set up about the cover half symmetry, all are equipped with the cylinder on two support frames, the last movably connected with movable mould base of cylinder, one side that movable mould base and cover half are adjacent is equipped with the movable mould, the adjacent one side of movable mould and cover half is equipped with the second die cavity, one side that movable mould and cover half carried on the back.

Preferably, two first guide pillars are fixedly connected between the top ends of the two support frames, two second guide pillars are fixedly connected between the two support frames and the water tank, the first guide pillars and the second guide pillars are distributed along the telescopic direction of the cylinder, the first guide pillars are located on one side of the fixed die, which is opposite to the water tank, the second guide pillars are located on one side of the fixed die, which is adjacent to the water tank, a guide sleeve is arranged on the movable die base, and the movable die base is slidably connected with the first guide pillars and the second guide pillars through the guide sleeve.

Preferably, the power device comprises a driving shaft and a motor installed on the first guide post, the driving shaft is connected with the first guide post through a bearing, the first end of the driving shaft is fixedly connected with the fixed die, the second end of the driving shaft is fixedly connected with a first gear, and the motor is in transmission connection with a second gear meshed with the first gear.

Preferably, the inside of cover half is equipped with the heat dissipation channel who runs through the cover half, be equipped with the raceway parallel with the arris of cover half in the heat dissipation channel, the one end of raceway extends to the water tank bottom and with water tank fixed connection, one of raceway is served and is installed the water pump, the raceway all is equipped with two at least nozzles along the axial arrangement of raceway with the adjacent both sides of movable mould, and each nozzle all is located heat dissipation channel, install the refrigerator in the water tank.

Preferably, at least two heat dissipation grooves are arranged on the inner walls of the four sides of the heat dissipation channel adjacent to the second die cavity along the axial direction of the water delivery pipe.

Preferably, the bottom end of the heat dissipation channel is provided with a guide cylinder which is coaxial with the water delivery pipe, and the bottom end of the guide cylinder extends into the water tank.

Preferably, a mixing plate is mounted on the bottom end of the guide shell.

Preferably, the top of water tank side is equipped with the thermovent, thermovent department is equipped with the flabellum, install the axis of rotation with the inner wall connection of water tank on the flabellum, the one of keeping away from the flabellum of axis of rotation serves fixedly connected with third gear, the meshing has the fourth gear on the third gear, the fourth gear cover is established on the draft tube.

Preferably, one side of the movable mold adjacent to the fixed mold is provided with positioning holes distributed along the stretching direction of the air cylinder, and four side surfaces of the fixed mold are provided with positioning columns matched with the positioning holes.

Preferably, the periphery of the moving wheel is provided with an annular groove, and the rail is arranged in the annular groove.

Compared with the prior art, the invention has the beneficial effects that: in the injection mold, the two groups of first mold cavities are switched by the autorotation fixed mold, so that when one group is in an injection molding state, a worker can take down a product on the other group, and the production efficiency of the mold is improved; the air cooling of the fixed die is realized through the heat dissipation channel, the water cooling of the fixed die is realized through water circulation, the heat dissipation efficiency of the fixed die is improved, and the production efficiency of the die is further improved.

Drawings

FIG. 1 is a schematic structural view of an injection mold of the present invention;

FIG. 2 is a cross-sectional view of the injection mold of the present invention;

FIG. 3 is a schematic view of a connection structure of a movable mold and a fixed mold of the injection mold of the present invention;

FIG. 4 is a schematic view of the internal structure of the water tank of the injection mold of the present invention;

fig. 5 is an enlarged view of a portion a of fig. 2.

The reference numbers and corresponding designations in the drawings are: 1. the cooling device comprises a support frame, 2 parts of a moving die, 3 parts of a fixed die, 4 parts of a first die cavity, 5 parts of a first guide post, 6 parts of a moving die seat, 7 parts of a cylinder, 8 parts of a second guide post, 9 parts of a rail, 10 parts of a guide cylinder, 11 parts of a water tank, 12 parts of a nozzle, 13 parts of a heat dissipation groove, 14 parts of a second die cavity, 15 parts of a mixing plate, 16 parts of a water pump, 17 parts of a water delivery pipe, 18 parts of a refrigerator, 19 parts of a heat dissipation channel, 20 parts of a positioning hole, 21 parts of a positioning column, 22 parts of a moving wheel, 23 parts of a material injection port, 24 parts of a heat dissipation port, 25 parts of a third gear, 26 parts of a fourth gear, 27 parts of a rotating shaft, 28 parts of a fan blade.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

Example (b): as shown in fig. 1-2, an injection mold comprises a water tank 11 with an opening at the top, an annular track 9 is fixed at the top of the water tank 11, a quadrangular fixed mold 3 is arranged on the track 9, the bottom surface of the fixed mold 3 is square, the fixed mold 3 provides power through a power device, the bottom end of the fixed mold 3 is in rolling connection with the track 9 through a moving wheel 22, first mold cavities 4 are arranged on four side surfaces of the fixed mold 3, support frames 1 are fixedly connected to two sides of the water tank 11, the two support frames 1 are symmetrically arranged relative to the fixed mold 3, cylinders 7 are arranged on the two support frames 1, a movable mold seat 6 is in transmission connection with the cylinders 7, a movable mold 2 is arranged on one side of the movable mold seat 6 adjacent to the fixed mold 3, a second mold cavity 14 is arranged on one side of the movable mold 2 adjacent to the fixed mold 3, and a filling port 23 communicated. In the embodiment, the fixed die 3 is supported by the moving wheel 22, the fixed die 3 is driven by the power device to rotate along the track 9, two opposite first die cavities 4 on the fixed die 3 are divided into two groups, under the supporting action of the supporting frame 1, the two movable die bases 6 are driven by the air cylinders 7 to move, the two movable dies 2 are driven by the movable die bases 6 to move, when the two movable dies 2 approach to each other and move, the second die cavities 14 on the two movable dies 2 are matched with the first die cavities 4 of the first group, raw materials are injected through the injection pipes 23, the injection production of workpieces is realized, when the injection is finished, the movable dies 2 are opened, the fixed die 3 rotates by 90 degrees, then the second die cavities 14 on the movable dies 2 are matched with the first die cavities 4 of the second group to continue the production, and at the moment, a worker can take out products in the first die cavities 4 of the first group, the production efficiency of the die is improved, and the fixed, the whole stress of the die is balanced, and the running stability of the die is improved.

Preferably, two first guide pillars 5 of fixedly connected with between the top of two support frames 1, two second guide pillars 8 of equal fixedly connected with between two support frames 1 and the water tank 11, first guide pillar 5 all distributes along the flexible direction of cylinder 7 with second guide pillar 8, first guide pillar 5 is located the one side that cover half 3 carried on the back with the water tank 11, second guide pillar 8 is located cover half 3 and the adjacent one side of water tank 11, be equipped with the guide pin bushing on the movable mould seat 6, movable mould seat 6 passes through guide pin bushing and the equal sliding connection of first guide pillar 5 and second guide pillar 8. In this embodiment, the stability of the first guide pillar 5 and the second guide pillar 8 is improved through the support frame 1, and under the cooperation of the first guide pillar 5 and the second guide pillar 8 with the guide sleeve, the guide supporting effect on the movable mold base 6 is realized, and the stability of the movable mold 2 is improved.

As shown in fig. 5, the power device comprises a driving shaft 32 and a motor 31 mounted on the first guide post 5, the driving shaft 32 is connected with the first guide post 5 through a bearing, a first end of the driving shaft 32 is fixedly connected with the fixed die 3, a second end of the driving shaft 32 is fixedly connected with a first gear 29, and a second gear 30 engaged with the first gear 29 is connected on the motor 31 in a transmission manner. In this embodiment, the motor 31 is a servo motor, the motor 31 drives the second gear 30 to rotate, and the driving shaft 31 drives the fixed mold 3 to rotate under the transmission action of the second gear 29, so that the precision of controlling the rotation angle of the fixed mold 3 is improved.

As shown in fig. 3-4, a heat dissipation channel 19 penetrating through the fixed mold 3 is arranged inside the fixed mold 3, a water pipe 17 parallel to an edge of the fixed mold 3 is arranged in the heat dissipation channel 19, one end of the water pipe 17 extends to the bottom of the water tank 11 and is fixedly connected with the water tank 11, a water pump 16 is mounted at one end of the water pipe 17, at least two nozzles 12 are arranged on two adjacent sides of the water pipe 17 and the movable mold 2 along the axial direction of the water pipe 17, each nozzle 12 is located in the heat dissipation channel 19, and a refrigerator 18 is mounted in the water tank 11. In the embodiment, the heat dissipation channel 19 dissipates heat inside the fixed mold 3, so that the heat dissipation efficiency of the fixed mold 3 is improved, and the molding efficiency of the mold is improved, when the mold is produced, after the first mold cavity 4 and the second mold cavity 14 are filled with raw materials, the heat absorption integral temperature of the fixed mold 3 is increased, the cooling water inside the water tank 11 is sent to the spray nozzle 12 from the water pipe 17 through the water pump 16, and then the water is directionally sprayed to the direction of the group of first mold cavities 4 matched with the second mold cavity 14 through the spray nozzle 12, so that the heat dissipation efficiency of two sides of the fixed mold 3 adjacent to the movable mold 2 is improved, the product molding efficiency is improved, the mold production efficiency is improved, then the water flows back into the water tank 11 along the heat dissipation channel 19, the water flow is cooled through the refrigerator 18, the circulating flow is realized, the heat dissipation efficiency of the water flow is improved, and the group of first mold cavities 4 in the mold opening state on the fixed, therefore, the heat dissipation is slow, partial heat can be reserved at the set of first mold cavities 4, the set of first mold cavities 4 are preheated, when the set of first mold cavities 4 are subjected to mold closing production, the cooling speed of raw materials injected into the set of first mold cavities 4 can be slowed down through the reserved heat, the raw materials can keep fluidity, the raw materials can be effectively filled into the set of first mold cavities 4, the quality of injection molding finished products is improved, the switching of the first mold cavities 4 is realized through the rotation of the fixed mold 3, the heat dissipation of the set of first mold cavities 4 in a mold closing state is realized, and the preheating of the set of first mold cavities 4 in the mold closing state is also realized.

Preferably, at least two heat dissipation grooves 13 are arranged on the inner walls of the four sides of the heat dissipation channel 19 adjacent to the second mold cavity 14 along the axial direction of the water delivery pipe 17. Increased heat radiating area through the radiating groove 13, improved the radiating efficiency of cover half 3, when rivers sprayed radiating groove 13 inside simultaneously, shortened the distance between rivers and the second die cavity 14, improved heat-conducting efficiency, further improved radiating efficiency, when rivers sprayed radiating groove 13 inside, reduced splashing of rivers, reduced the influence to the temperature of the first die cavity 4 department that is in the die sinking state.

Preferably, the bottom end of the heat dissipation channel 19 is provided with a guide cylinder 10 coaxial with the water delivery pipe 17, and the bottom end of the guide cylinder 10 extends to the inside of the water tank 11. In this embodiment, the guide cylinder 10 can guide the water flow in the heat dissipation channel 19 to the inside of the water tank 11, so that the probability that the water flow splashes to other parts of the movable mold 2 or the fixed mold 3 is reduced.

Preferably, a mixing plate 15 is mounted on the bottom end of the guide shell 10. In this embodiment, when the cover half 3 rotates, drive mixing plate 15 through draft tube 10 and rotate, realized mixing plate 15 and cover half 3's linkage, improved the energy-conserving effect of mould, mix the water of 11 insides of water tank through mixing plate 15, make the temperature degree of 11 insides of water tank even, improved the radiating efficiency of water to cover half 3.

Preferably, a heat dissipation port 24 is arranged at the top of the side surface of the water tank 11, a fan blade 28 is arranged at the heat dissipation port 24, a rotating shaft 27 connected with the inner wall of the water tank 11 is installed on the fan blade 28, a third gear 25 is fixedly connected to one end of the rotating shaft 27 far away from the fan blade 28, a fourth gear 26 is meshed with the third gear 25, and the fourth gear 26 is sleeved on the guide shell 10. In this embodiment, the fourth gear 26 is driven to rotate by the draft tube 10, under the transmission action of the third gear 25 and the rotating shaft 27, the fan blade 28 is driven to rotate by the fourth gear 26, the linkage between the fan blade 28 and the fixed mold 3 is realized, the energy-saving effect of the mold is improved, the heat inside the water tank 11 is dissipated to the outside of the water tank 11 from the heat dissipating port 24 by the fan blade 28, the auxiliary heat dissipation of the water inside the water tank 11 is realized, the energy consumption of the refrigerator 18 is reduced, and the energy-saving performance of the mold is improved.

Preferably, one side of the movable mold 2 adjacent to the fixed mold 3 is provided with positioning holes 20 distributed along the telescopic direction of the cylinder 7, and four side surfaces of the fixed mold 3 are provided with positioning columns 21 matched with the positioning holes 20. In the embodiment, the positioning effect between the fixed die 3 and the movable die 2 is realized through the matching between the positioning hole 20 and the positioning column 21, the die assembly precision between the first die cavity 4 and the second die cavity 14 is improved, and the quality of the die for producing finished products is improved.

Preferably, the moving wheel 22 is provided with an annular groove on its outer circumference, and the rail 9 is provided in the annular groove. In this embodiment, the stability of the connection between the moving wheel 22 and the rail 9 is improved and the stability of the rotation of the fixed die 3 is improved by the mutual limiting action between the annular groove and the rail 9.

The working principle of the invention is as follows:

during the use, power device drive cover half 3 along the rotation of track 9, two directly opposite in the four first die cavity 4 on the cover half 3 divide into two sets for a set, under the supporting action of support frame 1, through two movable mould bases 6 of cylinder 7 drive removal, then through two movable mould bases 2 of movable mould base 6 drive removal, when two movable moulds 2 move near each other, second die cavity 14 on two movable moulds 2 and first die cavity 4 compound die, pour into the raw materials into through notes material pipe 23, realize the production of moulding plastics of work piece, after moulding plastics and accomplish that the movable mould 2 is opened, cover half 3 rotates 90 degrees, later second die cavity 14 on the movable mould 2 and second set of first die cavity 4 compound die continue production, and the workman can take out the product in the first die cavity 4 this moment.

In summary, in the injection mold, the two groups of first mold cavities 4 are switched by the autorotation fixed mold 3, so that when one group is in an injection molding state, a worker can take down a product on the other group, and the production efficiency of the mold is improved; the air cooling of the fixed die 3 is realized through the heat dissipation channel 19, the water cooling of the fixed die 3 is realized through water circulation, the heat dissipation efficiency of the fixed die 3 is improved, and the production efficiency of the die is further improved.

The present invention is not limited to the above-described embodiments, and various modifications made without inventive step from the above-described concept will fall within the scope of the present invention for those skilled in the art.

Claims

1. The injection mold is characterized by comprising a water tank (11) with an opening at the top, wherein an annular track (9) is fixed at the top of the water tank (11), a quadrangular-shaped fixed mold (3) is arranged on the track (9), the bottom surface of the fixed mold (3) is square, the fixed mold (3) provides power through a power device, the bottom end of the fixed mold (3) is connected with the track (9) in a rolling manner through a moving wheel (22), four side surfaces of the fixed mold (3) are respectively provided with a first mold cavity (4), two sides of the water tank (11) are respectively and fixedly connected with a support frame (1), two support frames (1) are symmetrically arranged relative to the fixed mold (3), the two support frames (1) are respectively provided with a cylinder (7), the cylinder (7) is movably connected with a movable mold base (6), and a movable mold (2) is arranged on one side of the movable mold base (6) adjacent to the fixed mold, the movable mould (2) is equipped with second die cavity (14) with the adjacent one side of cover half (3), one side that movable mould (2) and cover half (3) carried on the back mutually is equipped with sprue (23) with second die cavity (14) intercommunication.

2. An injection mold according to claim 1, characterized in that two first guide pillars (5) are fixedly connected between the top ends of the two support frames (1), two second guide pillars (8) are fixedly connected between the two support frames (1) and the water tank (11), the first guide pillars (5) and the second guide pillars (8) are both distributed along the telescopic direction of the cylinder (7), the first guide pillars (5) are located on the side of the fixed mold (3) opposite to the water tank (11), the second guide pillars (8) are located on the side of the fixed mold (3) adjacent to the water tank (11), guide sleeves are arranged on the movable mold base (6), and the movable mold base (6) is slidably connected with the first guide pillars (5) and the second guide pillars (8) through the guide sleeves.

3. An injection mould according to claim 1, characterized in that the power means comprises a drive shaft (32) and a motor (31) mounted on the first guide post (5), the drive shaft (32) is connected with the first guide post (5) through a bearing, a first end of the drive shaft (32) is fixedly connected with the fixed mould (3), a second end of the drive shaft (32) is fixedly connected with a first gear (29), and a second gear (30) engaged with the first gear (29) is rotatably connected with the motor (31).

4. The injection mold according to claim 1, characterized in that a heat dissipation channel (19) penetrating through the fixed mold (3) is arranged inside the fixed mold (3), a water delivery pipe (17) parallel to the edges of the fixed mold (3) is arranged inside the heat dissipation channel (19), one end of the water delivery pipe (17) extends to the bottom of the water tank (11) and is fixedly connected with the water tank (11), a water pump (16) is installed at one end of the water delivery pipe (17), at least two nozzles (12) are arranged on two sides of the water delivery pipe (17) adjacent to the movable mold (2) along the axial direction of the water delivery pipe (17), each nozzle (12) is located inside the heat dissipation channel (19), and a refrigerator (18) is installed inside the water tank (11).

5. An injection mould according to claim 4, characterized in that the inner walls of the four sides of the heat dissipation channel (19) adjacent to the second mould cavity (14) are provided with at least two heat dissipation grooves (13) along the axial direction of the water duct (17).

6. An injection mould according to claim 4, characterized in that the bottom end of the heat dissipation channel (19) is provided with a guide cylinder (10) coaxial with the water delivery pipe (17), and the bottom end of the guide cylinder (10) extends to the inside of the water tank (11).

7. An injection mould according to claim 6, characterized in that a mixing plate (15) is mounted on the bottom end of the guide shell (10).

8. The injection mold according to claim 1, wherein a heat dissipation port (24) is formed in the top of the side face of the water tank (11), a fan blade (28) is arranged at the heat dissipation port (24), a rotating shaft (27) connected with the inner wall of the water tank (11) is installed on the fan blade (28), a third gear (25) is fixedly connected to one end, far away from the fan blade (28), of the rotating shaft (27), a fourth gear (26) is meshed with the third gear (25), and the guide cylinder (10) is sleeved with the fourth gear (26).

9. An injection mould according to claim 1, characterized in that one side of the movable mould (2) adjacent to the fixed mould (3) is provided with positioning holes (20) distributed along the telescopic direction of the cylinder (7), and four side surfaces of the fixed mould (3) are provided with positioning columns (21) matched with the positioning holes (20).

10. An injection mould according to claim 1, characterised in that the moving wheel (22) is provided with an annular groove on its periphery, in which the rail (9) is arranged.