Ejection stroke extending device of injection mold

Abstract

The utility model belongs to the technical field of injection molds, and particularly relates to an ejection stroke prolonging device of an injection mold, which aims at solving the problem that a finished product is easy to damage in the prior art and comprises a base, a lower mold and an upper mold are arranged on the base, an inner cavity is formed in the base, a motor is arranged in the inner cavity, and the lower mold and the upper mold are arranged on the base. An ejection mechanism is arranged in the lower mold and comprises a screw rod, the screw rod is fixedly connected with an output shaft of a motor, a lifting plate is in threaded connection with the screw rod, a bottom plate is fixedly installed on the lifting plate, four side plates are rotatably installed on the lifting plate, two original racks are arranged in an inner cavity, and the two original racks are arranged in the inner cavity. Two mounting grooves are formed in the lifting plate, first gears are rotationally mounted in the two mounting grooves, the bottom plate and the four side plates can be separated from a finished product at the same time, the finished product can be prevented from being damaged, safety is high, use is easy, and operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field especially relates to a kind of injection mold extension ejection stroke device. BACKGROUND

[0002] Injection mold is a kind of tool for producing plastic product;It is also the tool for giving plastic product complete structure and accurate size, injection molding is a kind of processing method for batch production of some complex parts, specifically refers to the heated molten plastic by injection molding machine high pressure injection into mold cavity, after cooling solidification, get shaped product, the injection mold extension ejection stroke device of public no. CN107791467A discloses a kind of, its structure includes mold base, lower die, electric heating plate, hydraulic cylinder, hydraulic ejector rod, injection pipeline, groove, stripping movable plate, extension guide column, upper convex membrane, guide column limit hole, high-precision stroke adjusting device, mold base is located below lower die, mold base and lower die lower part engage connection, but this device when ejecting product, only from the bottom ejecting product, it is easy to cause product damage, for this, we propose a kind of injection mold extension ejection stroke device. SUMMARY

[0003] The utility model aims at solving the shortcoming of easy to cause product damage in prior art, and provides an injection mold extension ejection stroke device.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] An injection mold extension ejection stroke device, including base, the lower die and upper die are provided on the base, the inner cavity is opened on the base, the motor is provided in the inner cavity, the ejection mechanism is provided in the lower die, the ejection mechanism includes screw rod, the output shaft of motor is fixedly connected with screw rod, the screw rod is threadedly connected with lifting plate, the bottom plate is fixedly installed on the lifting plate, four side plates are rotatably installed on the lifting plate, two original racks are provided in the inner cavity, two installation grooves are opened on the lifting plate, the first gear is rotatably installed in two installation grooves, two first gears are engaged with two original racks, the first pulley is fixedly installed on two first gears, the second pulley is rotatably installed in two installation grooves, the same belt is rotatably installed on the first pulley and the second pulley, the second gear is fixedly installed on two second pulleys, the ejection rack is engaged on two second gears, the ejection plate is fixedly installed on two ejection racks, the pull-open mechanism is provided on the lower die, the pull-open mechanism includes four flat plates, four flat plates are fixedly connected with four side plates, the hanging hole is opened on four flat plates, four rotating seats are provided on the lower die, the pull rod is rotatably installed on four rotating seats, the torsion spring is provided on four pull rods and four side plates, the hook is fixedly installed on two pull rods, two hooks and two hanging holes are matched.

[0006] Preferably, a vertical rail is arranged in the inner cavity, and the vertical rail is in sliding connection with the lifting plate.

[0007] Preferably, a slot rail is arranged in each of the two mounting grooves, and the two slot rails are in sliding connection with the two ejection racks.

[0008] Preferably, a second rotating shaft is rotatably arranged in each of the two mounting grooves, and the two second rotating shafts are fixedly connected with the two second gears.

[0009] Preferably, four flat grooves are formed in the lower mold, and the four flat grooves are matched with the four flat plates.

[0010] Preferably, a first rotating shaft is rotatably arranged in each of the two mounting grooves, and the two first rotating shafts are fixedly connected with the two first gears.

[0011] In the utility model, the beneficial effects of the injection mold extended ejection stroke device are that the cooperation of the screw rod, the lifting plate and the bottom plate in the ejection mechanism can eject the flat product, the cooperation of the second gear, the ejection rack and the ejection plate can separate the finished product from the bottom plate, and the cooperation of the flat plate, the hanging hole, the pull rod and the hook in the pulling mechanism can pull apart the four side plates, so that the side plates are separated from the finished product, stable demolding is achieved, and the finished product is prevented from being damaged.

[0012] The utility model can separate the bottom plate and the four side plates from the finished product at the same time, can prevent the finished product from being damaged, has high safety, is simple to use and convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The utility model discloses a base structure schematic diagram of an injection mold extended ejection stroke device.

[0014] Figure 2 The utility model discloses a main section structure schematic diagram of an injection mold extended ejection stroke device.

[0015] Figure 3 The utility model discloses a partial side section structure schematic diagram of an injection mold extended ejection stroke device.

[0016] Figure 4 The utility model discloses a partial side section structure schematic diagram of an injection mold extended ejection stroke device. Figure 2 The utility model discloses a partial side section structure schematic diagram of an injection mold extended ejection stroke device.

[0017] In the figure: 1, base; 2, lower mould; 3, upper mould; 4, motor; 5, screw rod; 6, lifting plate; 7, bottom plate; 8, side plate; 9, original rack; 10, mounting groove; 11, first gear; 12, first pulley; 13, second pulley; 14, belt; 15, second gear; 16, ejection rack; 17, ejection plate; 18, flat plate; 19, hanging hole; 20, rotating seat; 21, pull rod; 22, torque spring; 23, hook. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0019] Embodiment one

[0020] With reference to Figures 1-3 A kind of injection mold extension ejection stroke device, including base 1, base 1 is provided with lower mould 2 and upper mould 3, inner cavity is opened in base 1, motor 4 is arranged in inner cavity, ejection mechanism is arranged in lower mould 2, ejection mechanism includes screw rod 5, screw rod 5 is fixedly connected with the output shaft of motor 4, lifting plate 6 is threadedly connected on screw rod 5, bottom plate 7 is fixedly installed on lifting plate 6, four side plates 8 are rotatably installed on lifting plate 6, two original racks 9 are arranged in inner cavity, two mounting grooves 10 are opened in lifting plate 6, first gear 11 is rotatably installed in two mounting grooves 10, two first gears 11 are engaged with two original racks 9, first pulley 12 is fixedly installed on two first gears 11, second pulley 13 is rotatably installed in two mounting grooves 10, same belt 14 is rotatably installed on first pulley 12 and second pulley 13, second gear 15 is fixedly installed on two second pulleys 13, ejection rack 16 is engaged on two second gears 15, ejection plate 17 is fixedly installed on two ejection racks 16, pull mechanism is arranged on lower mould 2.

[0021] With reference to Figures 2-4 Pull mechanism includes four flat plates 18, four flat plates 18 are fixedly connected with four side plates 8, hanging hole 19 is opened in four flat plates 18, four rotating seats 20 are arranged on lower mould 2, pull rod 21 is rotatably installed on four rotating seats 20, torque spring 22 is arranged on four pull rods 21 and four side plates 8, hook 23 is fixedly installed on two pull rods 21, two hooks 23 are matched with two hanging holes 19.

[0022] With reference to Figure 2 Vertical rail is arranged in inner cavity, vertical rail is slidably connected with lifting plate 6, the setting of vertical rail can make lifting plate 6 stably slide in fixed position.

[0023] With reference to Figures 2-3, two first rotating shafts are rotatably installed in the two installation grooves 10, the two first rotating shafts are fixedly connected with the two first gears 11, and the first rotating shafts can enable the first gears 11 to stably rotate in the installation grooves 10.

[0024] With reference to Figure 2 , two groove rails are arranged in the two installation grooves 10, the two groove rails are slidably connected with the two ejection racks 16, and the groove rails can enable the ejection racks 16 to stably slide in the installation grooves 10.

[0025] With reference to Figures 2-3 , two second rotating shafts are rotatably installed in the two installation grooves 10, the two second rotating shafts are fixedly connected with the two second gears 15, and the second rotating shafts can enable the second gears 15 to stably rotate in the installation grooves 10.

[0026] With reference to Figure 2 , four flat grooves are arranged on the lower mold 2, the four flat grooves are matched with the four flat plates 18, the four flat grooves can accommodate the four flat plates 18, and the flat plates 18 cannot affect mold closing.

[0027] In this embodiment, when the mold is used, after the upper mold 3 is opened, the motor 4 is started, and then the screw rod 5 is driven to rotate, and then the lifting plate 6 is driven to ascend, so that the four side plates 8 and the bottom plate 7 drive the finished product to ascend, when the four side plates 8 ascend to a certain height, the hanging holes 19 on the four flat plates 18 are clamped to the four hooks 23, when the four side plates 8 continue to ascend, under the action of the reaction force, the four side plates 8 rotate to four sides, so that the four side plates 8 are separated from the finished product, at this time, the lifting plate 6 ascends to a certain height, the two first gears 11 and the two original racks 9 begin to mesh, because the two original racks 9 are fixed, the two first gears 11 roll on the two original racks 9, and then the two first pulleys 12 are driven to rotate, under the cooperation of the two belts 14, the two first pulleys 12 drive the two second pulleys 13 to rotate, and then the two second gears 15 are driven to rotate, and then the two ejection racks 16 ascend, so that the two ejection plates 17 eject the finished product, the finished product is separated from the bottom plate 7, the demolding is completed, and the finished product cannot be damaged.

[0028] Embodiment two

[0029] The difference between this embodiment and embodiment one is that an inductor and a hair dryer are arranged on one side of the lower mold 2, when the inductor senses the high-temperature finished product during demolding, the hair dryer is started to cool the finished product, the finished product can be quickly taken down, the continuous injection molding is facilitated, and the injection molding efficiency can be improved.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An injection mold extended ejection stroke device comprising a base (1), characterized in that, The base (1) is provided with a lower die (2) and an upper die (3), the base (1) is provided with an inner cavity, the inner cavity is provided with a motor (4), the lower die (2) is provided with an ejection mechanism, the ejection mechanism comprises a screw rod (5), the screw rod (5) is fixedly connected with the output shaft of the motor (4), the screw rod (5) is threadedly connected with a lifting plate (6), the lifting plate (6) is fixedly installed with a bottom plate (7), the lifting plate (6) is rotatably installed with four side plates (8), the inner cavity is provided with two original racks (9), the lifting plate (6) is provided with two installation grooves (10), the two installation grooves (10) are rotatably installed with first gears (11), the two first gears (11) are engaged with the two original racks (9), the two first gears (11) are fixedly installed with first pulleys (12), the two installation grooves (10) are rotatably installed with second pulleys (13), the first pulley (12) and the second pulley (13) are rotatably installed with the same belt (14), the two second pulleys (13) are fixedly installed with second gears (15), the two second gears (15) are engaged with ejection racks (16), the two ejection racks (16) are fixedly installed with ejection plates (17), and the lower die (2) is provided with a pulling mechanism.

2. An apparatus for extending the ejection stroke of an injection mold as described in claim 1, wherein, The pulling mechanism comprises four flat plates (18), the four flat plates (18) are fixedly connected with the four side plates (8), the four flat plates (18) are provided with hanging holes (19), the lower die (2) is provided with four rotating seats (20), the four rotating seats (20) are rotatably installed with pull rods (21), the four pull rods (21) and the four side plates (8) are provided with torque springs (22), the two pull rods (21) are fixedly installed with hooks (23), and the two hooks (23) are matched with the two hanging holes (19).

3. An apparatus for extending the ejection stroke of an injection mold as described in claim 1, wherein, The inner cavity is provided with a vertical rail, and the vertical rail is slidably connected with the lifting plate (6).

4. An apparatus for extending the ejection stroke of an injection mold as described in claim 1, wherein, The two installation grooves (10) are rotatably installed with first rotating shafts, and the two first rotating shafts are fixedly connected with the two first gears (11).

5. An apparatus for extending the ejection stroke of an injection mold as described in claim 1, wherein, The two installation grooves (10) are provided with groove rails, and the two groove rails are slidably connected with the two ejection racks (16).

6. An apparatus for extending the ejection stroke of an injection mold as described in claim 1, wherein, The two installation grooves (10) are rotatably installed with second rotating shafts, and the two second rotating shafts are fixedly connected with the two second gears (15).

7. An apparatus for extending the ejection stroke of an injection mold as described in claim 2, wherein, The lower die (2) is provided with four flat grooves, and the four flat grooves are matched with the four flat plates (18).

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