Injection mold with multiple switchable injection molding channels

Abstract

The utility model discloses a multi-injection-channel switchable injection mold which comprises a movable mold base and a fixed mold base arranged below the movable mold base, a plurality of mold grooves are formed in the top of the fixed mold base, lower molds are arranged in the mold grooves in a sliding and sleeved mode, and upper molds fixedly connected to the bottom of the movable mold base are arranged above the mold grooves in a matched mode. And a shielding box is fixedly arranged on the fixed mold base in a sleeving manner. By arranging a series of structures, multi-product injection molding is facilitated, the through-flow quantity is flexibly adjusted or the injection molding position is switched according to the injection molding requirement, the use flexibility is improved, residual injection molding materials in a copper pipe are conveniently heated to prevent solidification after injection molding, and a plurality of molded products are conveniently and synchronously discharged by means of lifting force of mold opening after mold opening; and in addition, vertical guiding and traction during mold opening can be integrated in the middle, and a jacking discharging piece can be integrally integrated and hidden in a shielding box, so that the phenomena of material taking shielding and easy scratching, traction and damage caused by external disorder and protrusion are avoided, and the neatness, the attractiveness and the use safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold with multiple switchable injection channels. Background Art

[0002] An injection mold is a tool for producing plastic products; it is also a tool that gives plastic products a complete structure and precise dimensions. Existing injection molds are mostly single-channel structures, which have the disadvantages of low injection efficiency. In addition, after the injection molding is completed, there are disadvantages such as cumbersome material unloading and a long time consumption.

[0003] In this regard, after searching, publication number CN215619536U discloses an injection mold with switchable multiple injection channels, including a support frame, a fixed mold base, a movable mold base and an injection tube, a plurality of cylinders are fixedly arranged on the top surface of the support frame, a plurality of telescopic ends of the cylinders are fixedly arranged with movable plates, the movable mold base is fixedly arranged below the movable plate, and a plurality of upper molds are arranged on the movable mold base, a molding cavity with the same number as the upper mold is opened on the top surface of the fixed mold base, a lower mold is movably arranged in the molding cavity, and a demolding mechanism is also arranged in the fixed mold base, the demolding mechanism includes a lifting assembly and a driving assembly, and by arranging a plurality of upper molds and lower molds, the injection mold can mold a plurality of products at the same time, thereby improving the production efficiency of the products, and in addition, by arranging the demolding mechanism, the products in the plurality of molding cavities are demolded, thereby improving the unloading speed and further improving the production efficiency of the products.

[0004] The above technology can simultaneously perform injection molding of multiple products by setting multiple molding cavities, multiple upper molds, diverter valves and multiple material delivery pipes, thereby improving work efficiency. The oil storage cylinder, oil delivery pipe, ejection mold plate, sliding block, etc. are set up to generate oil pressure that is converted into a structure for lifting and discharging, and can automatically discharge materials after opening the film. However, there are the following shortcomings when using it:

[0005] 1. The diverter valve can only divert flow, but cannot adjust the flow quantity and switch the injection position according to the number of injections. The flexibility of use is not ideal. In addition, the remaining material in the feed pipe cannot be anti-condensed after injection. There is a risk that the remaining material in the pipe will solidify and affect the next material flow. 2. The multiple oil pipes used to provide pressure are exposed and surrounded on the outside, which makes the outside less neat and aesthetically pleasing. It is easy to cause obstruction when people take the material after the discharge, and it may be accidentally scratched, pulled and damaged due to the mess on the outside. The safety of use is not ideal. In view of this, the present application proposes an injection mold with switchable multiple injection channels. Utility Model Content

[0006] The utility model aims to provide an injection mold with multiple switchable injection channels to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold with switchable multiple injection channels, comprising a movable mold base and a fixed mold base arranged below the movable mold base, a plurality of mold grooves are opened on the top of the fixed mold base, a lower mold is provided in a sliding sleeve in the mold groove, an upper mold fixedly connected to the bottom of the movable mold base is provided above the mold groove, a shielding box is fixedly provided on the fixed mold base, a U-shaped support rod is fixedly connected to the top of the shielding box, a multi-stage electric push rod with an extended end fixedly connected to the top of the movable mold base is embedded and fixed on the top inner wall of the U-shaped support rod, and the movable mold base is driven to rise and fall by the multi-stage electric push rod;

[0008] The movable mold base is provided with a switchable anti-condensation powder assembly connected with the interior of the plurality of upper molds, the top of the switchable anti-condensation powder assembly is connected and fixed with a telescopic injection hose, and a U-shaped support rod is fixedly sleeved on the outer top of the telescopic injection hose, and the switchable anti-condensation powder assembly is used to adjust the flow quantity or perform switching work according to injection molding requirements;

[0009] A vertical guide lifting and pulling assembly is fixedly connected to the bottom center of the movable mold seat, the fixed mold seat is movably mounted on the vertical guide lifting and pulling assembly, the bottom of the vertical guide lifting and pulling assembly is fixedly connected to a linkage plate located in a shielding box, the top of the linkage plate is fixedly connected to a discharge assembly, the discharge assembly is movably mounted in multiple mold grooves and fixedly connected to the bottoms of multiple lower molds, the vertical guide lifting and pulling assembly is used to vertically guide the movable mold seat when it is raised or lowered, and to drive the linkage plate to rise when the movable mold seat continues to rise after opening the mold, and the discharge assembly is used to automatically lift the multiple lower molds when the linkage plate is raised, and realize automatic discharge work by raising the multiple lower molds.

[0010] Preferably, the switchable anti-condensation powder assembly includes a plurality of electrically controlled valves fixedly mounted on the top of the movable mold base, the discharge ports of the electrically controlled valves extend into the corresponding upper mold and are connected to the interior of the upper mold, the feed ports of the plurality of electrically controlled valves are connected and fixed with a copper tube with sealing structures at both ends, two electric heating sleeves are fixedly mounted on the copper tube, and the top of the copper tube is connected and fixed to the bottom end of the telescopic injection molding hose.

[0011] Preferably, the vertical guide lifting and pulling assembly includes a rectangular outer tube fixedly connected to the bottom center of the movable mold base, the fixed mold base is movably sleeved on the rectangular outer tube, a rectangular guide rod is slidably sleeved inside the rectangular outer tube, the bottom end of the rectangular guide rod extends into the shielding box and is fixedly connected to the top of the linkage plate, a limiting groove is provided on the left side of the rectangular guide rod, and a limiting block slidably connected to the limiting groove is fixedly connected to the left inner wall of the rectangular outer tube.

[0012] Preferably, the discharge assembly includes a plurality of vertical guide rods fixedly connected to the top of the linkage plate, the top ends of the plurality of vertical guide rods respectively slide into the corresponding mold grooves and are fixedly connected with top blocks, the top blocks are movably sleeved in the corresponding mold grooves and fixedly connected to the bottom of the lower mold, and two springs are fixedly connected between the top of the linkage plate and the bottom of the fixed mold seat.

[0013] Preferably, a rectangular hole fixedly connected to the outer side of the fixed mold base is opened on the top of the shielding box.

[0014] Preferably, the copper tube is located in front of the extended end of the multi-stage electric push rod.

[0015] Preferably, a rectangular guide hole is provided at the top center of the fixed mold base, which is in movably contact with the outer side of the rectangular outer tube.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. This is an injection mold with switchable multiple injection channels. It can perform multi-product injection molding by cooperating with a multi-stage electric push rod, a movable mold base, a fixed mold base, a switchable anti-condensation powder component and a telescopic injection hose. It can also adjust the flow quantity or switch the injection position according to the injection molding requirements, which is convenient for personnel to adjust according to actual needs and improves the flexibility of use. It can also heat the injection molding material remaining in the copper tube after injection molding to prevent solidification, reduce the phenomenon that the cooling and solidification of the remaining material in the copper tube affects the next material flow, and improve the use effect;

[0018] 2. This multi-injection channel switchable injection mold, through the cooperation of the movable mold base, vertical guide lifting and pulling components, linkage plate and discharge components, can automatically discharge multiple molded products synchronously after the mold is opened by using the lifting force of the mold opening. In addition, a rectangular outer tube is used in the middle for vertical guidance and lifting and pulling. The linkage plate, vertical guide rod, spring and other discharge and lifting parts are all closed and arranged in a shielding box, so that there is no exposed protrusion on the outside of the discharge part, which improves the neatness and aesthetics of the outside, avoids the phenomenon of material taking obstruction and susceptibility to scratching and pulling damage due to external messy protrusions, and improves safety in use.

[0019] The utility model is provided with a series of structures, which is convenient for injection molding of multiple products and flexible adjustment of the flow quantity or switching of the injection molding position according to the injection molding requirements, thereby improving the flexibility of use, facilitating the heating of the injection molding material remaining in the copper tube to prevent solidification after injection molding, and facilitating the automatic synchronous discharge of multiple molded products by using the lifting force of the mold after mold opening. In addition, the vertical guide and the pulling during mold opening can be integrated in the middle part, and the lifting and discharging parts can be integrated and hidden in the shielding box, thereby avoiding the phenomenon of material collection being blocked and susceptible to scratching and pulling damage due to external clutter and protrusions, thereby improving the neatness, aesthetics and safety of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of an injection mold with multiple switchable injection channels proposed by the utility model;

[0021] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure.

[0022] In the figure: 1. fixed mold base; 101. mold groove; 102. lower mold; 103. upper mold; 2. shielding box; 3. movable mold base; 4. U-shaped support rod; 5. copper tube; 6. electric heating sleeve; 7. electric control valve; 8. telescopic injection hose; 9. multi-stage electric push rod; 10. rectangular outer tube; 11. rectangular guide rod; 12. limit groove; 13. limit block; 14. linkage plate; 15. top block; 16. vertical guide rod; 17. spring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 to Figure 2 As shown, the present embodiment proposes an injection mold with switchable multiple injection channels, including a movable mold base 3 and a fixed mold base 1 arranged below the movable mold base 3, a plurality of mold grooves 101 are provided on the top of the fixed mold base 1, a lower mold 102 is provided in a sliding sleeve in the mold groove 101, an upper mold 103 fixedly connected to the bottom of the movable mold base 3 is provided above the mold groove 101, a shielding box 2 is fixedly provided on the fixed mold base 1, wherein a rectangular hole fixedly connected to the outer side of the fixed mold base 1 is provided on the top of the shielding box 2, which plays the effect of embedded fixed support for the fixed mold base 1, a U-shaped support rod 4 is fixedly connected to the top of the shielding box 2, and the top of the U-shaped support rod 4 A multi-stage electric push rod 9 whose protruding end is fixedly connected to the top of the movable mold base 3 is embedded and fixed on the inner wall of the part, and the movable mold base 3 is driven to rise and fall by the multi-stage electric push rod 9; a switchable anti-condensation type powder material assembly connected to the interior of multiple upper molds 103 is installed on the movable mold base 3, and a telescopic injection hose 8 is fixedly connected to the top of the switchable anti-condensation type powder material assembly, and a U-shaped support rod 4 is fixedly sleeved on the outer top of the telescopic injection hose 8, wherein the top of the U-shaped support rod 4 is provided with a set hole fixedly connected to the outer top of the telescopic injection hose 8, and the switchable anti-condensation type powder material assembly is used to adjust the flow quantity or perform switching work according to the injection molding requirements;

[0025] A vertical guide lifting and pulling assembly is fixedly connected to the bottom center of the movable mold base 3, and the fixed mold base 1 is movably mounted on the vertical guide lifting and pulling assembly. The bottom of the vertical guide lifting and pulling assembly is fixedly connected to a linkage plate 14 located in the shielding box 2, and the top of the linkage plate 14 is fixedly connected to a discharge assembly. The discharge assembly is movably mounted in multiple mold grooves 101 and fixedly connected to the bottoms of multiple lower molds 102. The vertical guide lifting and pulling assembly is used to vertically guide the movable mold base 3 when it is raised or lowered, and to drive the linkage plate 14 to rise when the movable mold base 3 continues to rise after the mold is opened. The discharge assembly is used to automatically lift the multiple lower molds 102 when the linkage plate 14 is raised, and automatic discharge is achieved by raising the multiple lower molds 102.

[0026] Specifically, the switchable anti-coagulation powder assembly includes a plurality of electrically controlled valves 7 fixedly mounted on the top of the movable mold base 3, wherein the discharge ports of the electrically controlled valves 7 extend into the corresponding upper mold 103 and are connected to the interior thereof, wherein the top of the movable mold base 3 is provided with a plurality of circular through-holes for the discharge ports of the corresponding electrically controlled valves 7 to pass through respectively, and the inner walls of the circular through-holes are in close contact with the outer sides of the discharge ports of the corresponding electrically controlled valves 7, and the feed ports of the plurality of electrically controlled valves 7 are connected and fixedly connected with a copper tube 5 with a sealing structure at both ends, and two electric heating sleeves 6 are fixedly sleeved on the copper tube 5, and the copper tube The top of 5 is connected and fixed with the bottom end of the telescopic injection hose 8, and the copper tube 5 is located in front of the extended end of the multi-stage electric push rod 9; the multiple electric control valves 7, the copper tube 5 and the electric heating sleeve 6 are coordinated, and the amount of the same flow during injection molding is adjusted by opening the required number of electric control valves 7. When all of them do not need to be opened, the injection molding position is switched by opening or closing a part of the electric control valves 7, so that it is convenient for personnel to select a position on the side that is convenient for taking materials for application. The electric heating sleeve 6 is used to add to the copper tube 5 after injection molding to prevent the material inside from solidifying.

[0027] Furthermore, the vertical guide lifting and pulling assembly includes a rectangular outer tube 10 fixedly connected to the bottom center of the movable mold base 3, and the fixed mold base 1 is movably sleeved on the rectangular outer tube 10, wherein a rectangular guide hole is opened at the top center of the fixed mold base 1 for movably contacting the outer side of the rectangular outer tube 10, which plays the effect of allowing the rectangular outer tube 10 to pass through and guiding its vertical movement, and a rectangular guide rod 11 is slidably sleeved in the rectangular outer tube 10, and the bottom end of the rectangular guide rod 11 extends into the shielding box 2 and is fixedly connected to the top of the linkage plate 14, wherein a limiting groove 12 is opened on the left side of the rectangular guide rod 11, and a limit groove 12 is opened on the left inner wall of the rectangular outer tube 10. A limit block 13 is fixedly connected and slidably connected to the limit groove 12; the rectangular outer tube 10, the rectangular guide rod 11, the limit groove 12 and the limit block 13 are arranged to cooperate with each other, and the rectangular outer tube 10 is driven to slide vertically on the fixed mold base 1 and the outside of the rectangular guide rod 11 when the movable mold base 3 is lifted and lowered to perform vertical guiding work. When the mold is opened and continues to rise, the movable mold base 3 continues to rise to drive the rectangular outer tube 10 to rise, and the rectangular outer tube 10 drives the limit block 13 to squeeze the top inner wall of the limit groove 12, and the extrusion force is used to drive the rectangular guide rod 11 to rise, and the lifting of the rectangular guide rod 11 is used to realize the automatic driving of the linkage plate 14 to rise.

[0028] Furthermore, the discharging assembly includes a plurality of vertical guide rods 16 fixedly connected to the top of the linkage plate 14, the top ends of the plurality of vertical guide rods 16 are respectively slidably inserted into the corresponding die grooves 101 and fixedly connected with the top blocks 15, wherein the bottom inner wall of the die groove 101 is provided with vertical guide holes slidably fitted with the outer sides of the corresponding vertical guide rods 16, which play the effect of allowing the vertical guide rods 16 to pass through and guide their vertical sliding, the top blocks 15 are movably sleeved in the corresponding die grooves 101 and fixedly connected to the bottom of the lower die 102, and two springs 17 are fixedly connected between the top of the linkage plate 14 and the bottom of the fixed die seat 1; the vertical guide rods 16, the top blocks 15 and the springs 17 are arranged to cooperate, and the lifting of the linkage plate 14 is utilized to drive the plurality of top blocks 15 to rise through the plurality of vertical guide rods 16, and compress the springs 17, and the plurality of lower dies 102 are driven to move up by the plurality of top blocks 15 to lift and discharge the materials, thereby realizing the effect of automatic discharging by using the mold opening lifting force after accommodation.

[0029] The method of using this embodiment is as follows: during injection molding, firstly, the multi-stage electric push rod 9 is started in the positive direction to drive the movable mold base 3 to move downward, and the movable mold base 3 drives the multiple upper molds 103 to be clamped into the multiple mold grooves 101 for mold closing, and at the same time, the movable mold base 3 drives the rectangular outer tube 10 to slide downward on the fixed mold base 1 and the outer side of the rectangular guide rod 11, and the rectangular outer tube 10 drives the limit block 13 to slide downward in the limit groove 12. After mold closing, the injection plastic is injected through the telescopic injection hose 8, and the injection plastic enters the copper tube 5, and then is diverted to the multiple mold grooves 101 through the multiple electric control valves 7 for injection molding, so as to achieve the effect of multi-product injection molding;

[0030] In addition, when all valves do not need to be opened, personnel can select a suitable number of electric control valves 7 to open, and then close other electric control valves 7, and personnel can select the electric control valve 7 corresponding to the convenient material taking position to open, so that it is convenient to adjust the flow quantity and switch the injection molding position according to the injection molding requirements, and improve the flexibility of use. After injection molding, open the two electric heating sleeves 6 to add the copper tube 5 to achieve heating and anti-solidification of the remaining injection material in the copper tube 5, reduce the cooling and solidification of the remaining material in the copper tube 5 and affect the next material flow, and improve the use effect;

[0031] After molding, the multi-stage electric push rod 9 is started in reverse to drive the movable mold base 3 to rise upward, and the movable mold base 3 drives multiple upper molds 103 to move out of the corresponding mold grooves 101 respectively to open the mold. At the same time, the movable mold base 3 drives the rectangular outer tube 10 to rise, and the rectangular outer tube 10 drives the limit block 13 to move back upward. When the movable mold base 3 is driven to rise after the mold is opened, the limit block 13 continues to rise and squeezes the top inner wall of the limit groove 12. Under the squeezing force, the limit block 13 lifts the rectangular guide rod 11 upward. At this time, the rectangular guide rod 11 drives the linkage plate 14 to move upward, and the linkage plate 14 drives multiple vertical guide rods 16 to move upward and press the two springs 1 7 compression, multiple vertical guide rods 16 drive multiple ejector blocks 15 to move upward, and the ejector blocks 15 drive the corresponding lower mold 102 to move upward to eject the molded products upward, so as to achieve the effect of automatically and synchronously discharging multiple molded products by using the lifting force of the mold after the mold is opened; in addition, the rectangular outer tube 10 is used in the middle for vertical guidance and lifting and pulling, and the discharging and lifting parts such as the linkage plate 14, the vertical guide rod 16, and the spring 17 are all closed and arranged in the shielding box 2, so that there is no exposed protrusion on the outside of the discharging part, which improves the neatness and aesthetics of the outside, avoids the phenomenon of material blocking and easy damage by scratching and pulling due to the external messy protrusion, and improves the safety of use;

[0032] After the molded product is lifted and discharged, the personnel can directly remove it, and then start the multi-stage electric push rod 9 in the positive direction again to drive the movable mold base 3 downward to close the mold. The movable mold base 3 will drive the rectangular outer tube 10 to move downward, and the rectangular outer tube 10 will drive the limit block 13 to move downward, releasing the lifting force on the rectangular guide rod 11. At this time, the elastic force of the spring 17 in the compressed state drives the linkage plate 14 to move back downward, and the linkage plate 14 drives the multiple top blocks 15 to move back and reset downward through the multiple vertical guide rods 16, and then the injection molding work can continue.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An injection mold with multiple switchable injection channels, comprising a movable mold base (3) and a fixed mold base (1) arranged below the movable mold base, characterized in that: The top of the fixed mold base (1) is provided with a plurality of mold grooves (101), a lower mold (102) is slidably sleeved in the mold groove (101), an upper mold (103) fixedly connected to the bottom of the movable mold base (3) is provided above the mold groove (101), a shielding box (2) is fixedly sleeved on the fixed mold base (1), a U-shaped support rod (4) is fixedly connected to the top of the shielding box (2), and a multi-stage electric push rod (9) whose protruding end is fixedly connected to the top of the movable mold base (3) is embedded and fixed on the inner wall of the top of the U-shaped support rod (4); The movable mold base (3) is provided with a switchable anti-condensation powder assembly which is in communication with the interior of the plurality of upper molds (103); a telescopic injection hose (8) is fixedly connected to the top of the switchable anti-condensation powder assembly; and a U-shaped support rod (4) is fixedly sleeved on the outer top of the telescopic injection hose (8); A vertical guide lifting assembly is fixedly connected at the center of the bottom of the movable mold base (3); the fixed mold base (1) is movably sleeved on the vertical guide lifting assembly; the bottom of the vertical guide lifting assembly is fixedly connected to a linkage plate (14) located in the shielding box (2); the top of the linkage plate (14) is fixedly connected to a discharge assembly; the discharge assembly is movably sleeved in a plurality of mold grooves (101) and fixedly connected to the bottom of a plurality of lower molds (102).

2. The injection mold with multiple switchable injection channels according to claim 1, characterized in that: The switchable anti-coagulation powder assembly comprises a plurality of electrically controlled valves (7) fixedly mounted on the top of a movable mold base (3); the discharge ports of the electrically controlled valves (7) extend into the corresponding upper mold (103) and are connected to the interior thereof; the feed ports of the plurality of electrically controlled valves (7) are connected and fixedly connected to a copper tube (5) having a blocking structure at both ends; two electric heating sleeves (6) are fixedly mounted on the copper tube (5); and the top of the copper tube (5) is connected and fixedly connected to the bottom end of a telescopic injection hose (8).

3. The injection mold with multiple switchable injection channels according to claim 2, characterized in that: The vertical guide lifting assembly comprises a rectangular outer tube (10) fixedly connected to the bottom center of the movable mold base (3); the fixed mold base (1) is movably sleeved on the rectangular outer tube (10); a rectangular guide rod (11) is slidably sleeved inside the rectangular outer tube (10); the bottom end of the rectangular guide rod (11) extends into the shielding box (2) and is fixedly connected to the top of the linkage plate (14); a limiting groove (12) is provided on the left side of the rectangular guide rod (11); and a limiting block (13) slidably connected to the limiting groove (12) is fixedly connected to the left inner wall of the rectangular outer tube (10).

4. The injection mold with multiple switchable injection channels according to claim 3, characterized in that: The discharge assembly comprises a plurality of vertical guide rods (16) fixedly connected to the top of the linkage plate (14); the top ends of the plurality of vertical guide rods (16) are respectively slidably inserted into the corresponding die grooves (101) and are fixedly connected to a top block (15); the top block (15) is movably sleeved in the corresponding die grooves (101) and is fixedly connected to the bottom of the lower die (102); and two springs (17) are fixedly connected between the top of the linkage plate (14) and the bottom of the fixed die seat (1).

5. The injection mold with multiple switchable injection channels according to claim 1, characterized in that: The top of the shielding box (2) is provided with a rectangular hole which is fixedly connected to the outer side of the fixed mold base (1).

6. The injection mold with multiple switchable injection channels according to claim 2, characterized in that: The copper tube (5) is located in front of the extended end of the multi-stage electric push rod (9).

7. The injection mold with multiple switchable injection channels according to claim 3, characterized in that: A rectangular guide hole is provided at the top center of the fixed mold base (1) and is in movably contact with the outer side of the rectangular outer tube (10).

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