Double-ejection rear mold demolding structure based on injection mold

Abstract

The utility model discloses a double-ejection rear mold demolding structure based on an injection mold, and relates to the technical field of injection molds. Comprising a mounting base, a mold body is fixed to the upper end face of the mounting base, and when a sliding groove of a movable block makes contact with a pulley, a connecting block at the upper end of a vertical rod is driven to slide in a cavity groove in a fixed block, so that a second ejector rod at the upper end of the connecting block is ejected and pushed; the first ejector rod and the demolding plate are matched for first-time demolding work, then the second ejector rod is used for second-time demolding, demolding difficulty caused by an injection molding part which is complex in shape and difficult to eject and demold for a single time is avoided, the demolding process is smoother and more efficient, and the demolding efficiency is improved; and the connecting block is subjected to damping compression in the cavity groove through the damping spring, so that the product is prevented from being damaged by a jacking force generated during jacking, and the completeness of the product and the mold is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, concretely is the double ejection post mold stripping structure based on injection mold. BACKGROUND

[0002] Injection molding is also called injection molding, it is a kind of injection and molding forming die, the plastic solution or other plastic solution is generally added to the inside of injection mold through injection port in the process of using injection mold, after the cooling and solidification of plastic solution, the mold body is separated, so that injection part can be obtained, injection mold can quickly modularize processing parts, improve production efficiency.

[0003] The patent (publication number: CN222115901U, publication date: 2024-12-06) discloses an automobile lamp shell injection mold with automatic stripping function, which comprises a bottom plate, a lower mold, a vertical rod and an upper mold, the upper end of the bottom plate is fixedly provided with the lower mold and the vertical rod, and the upper end of the vertical rod is slidably provided with the upper mold, the lower end of the upper mold is fixedly provided with a first traction rope, the inside of the bottom plate is provided with a movement groove, and the inside of the movement groove is slidably provided with a movement piece, and the inside of the lower mold is slidably provided with an ejection piece.

[0004] Based on the above patent, the traditional injection mold stripping structure often adopts single ejection mode, however, with the diversification of the shape and size of injection parts, especially for those injection parts with complex shape and difficult to be stripped by single ejection, the traditional stripping structure is easy to cause stripping difficulty, product damage and other problems, and there is often uneven stress in the stripping process, which not only affects the stripping efficiency, but also may cause unnecessary damage to the injection part and the mold, therefore, the utility model provides the double ejection post mold stripping structure based on injection mold. UTILITY MODEL CONTENTS

[0005] In view of the defects of the prior art, the utility model provides the double ejection post mold stripping structure based on injection mold, which solves the problems that the traditional injection mold stripping structure often adopts single ejection mode, however, with the diversification of the shape and size of injection parts, especially for those injection parts with complex shape and difficult to be stripped by single ejection, the traditional stripping structure is easy to cause stripping difficulty, product damage and other problems, and there is often uneven stress in the stripping process, which not only affects the stripping efficiency, but also may cause unnecessary damage to the injection part and the mold.

[0006] In order to achieve the above object, the utility model discloses a double -end -out post -mold demoulding structure based on injection mold, including installation base, the upper end surface of installation base is fixed with mold main part, the upper end of mold main part is provided with mould cover, be provided with the demoulding mechanism for injection product processing on mold main part, and the demoulding mechanism comprises:

[0007] Lifting assembly, the inside bottom of mold main part is fixed with first sliding rail support, the inside of first sliding rail support is provided with movable rod connected through screw component, the upper end of movable rod is provided with push plate connected through rotating shaft,

[0008] Push assembly, including the first top rod of push plate upper end fixed connection, the upper end of first top rod is fixed with demoulding plate, the inner wall of mold main part is fixed with fixed block, the inside of fixed block is provided with cavity groove, the inside of cavity groove is provided with second top rod connected through elastic component, the upper end surface of push plate is provided with movable block connected through sliding component.

[0009] Preferably, the screw component includes the motor of first sliding rail support one end fixed connection, the output of motor is connected with screw rod, the inner wall of first sliding rail support is slidably connected with sliding block, the sliding block is in screw connection with screw rod, the movable rod is located the upper end of sliding block, and the movable rod is rotatably connected with sliding block through rotating shaft.

[0010] Preferably, the lower end surface of push plate is fixed with telescopic sleeve rod at four ends, and the lower end of telescopic sleeve rod is fixedly connected with mold main part.

[0011] Preferably, the elastic component includes the shock absorber spring of cavity groove inside upper end fixed connection, the lower end of shock absorber spring is fixedly connected with connecting block, the inner wall of cavity groove is slidably connected with connecting block, the lower end of connecting block is fixed with vertical rod, the lower end surface of vertical rod is provided with pulley, the second top rod is fixedly connected at the upper end surface of connecting block, and the second top rod is slidably connected with demoulding plate.

[0012] Preferably, the sliding component includes the second sliding rail support of push plate upper end surface fixed, the movable block is slidably connected with the inner wall of second sliding rail support, the inside lower end of mold main part is fixed with inclined rod and is arranged obliquely, the upper end of inclined rod is fixedly connected with fixed block, the movable block is slidably connected with inclined rod, and the inclined surface of movable block is provided with sliding groove.

[0013] Preferably, the four ends of installation base are fixedly connected with electric push rod, the four side walls of mould cover are fixedly connected with side block, the lower end surface of side block is fixed with first mounting plate, the telescopic end of electric push rod is fixed with second mounting plate, and the first mounting plate is connected with second mounting plate through bolt.

[0014] Advantages

[0015] The utility model provides a double ejection post mould demoulding structure based on injection mould, has the following advantages compared with prior art:

[0016] First, the screw of the utility model is rotated by the motor, drives the sliding block to slide on the inner wall of the first sliding rail support through the screw, then the push plate is rotationally connected with the sliding block through the rotating shafts at both ends of the movable rod, when the angle of the movable rod changes, the push plate is lifted along the telescopic sleeve rod, drives the first push rod at the upper end of the push plate and the demoulding plate to lift, through the automatic demoulding process, the demoulding time is greatly shortened, thereby the production efficiency is improved, through the lifting of the first push rod to the demoulding plate, the uneven stress condition of the mould in the demoulding process is reduced, and the lifting position of the demoulding plate is controlled by controlling the activity angle of the movable rod through the sliding distance control of the sliding block on the inner wall of the first sliding rail support, helps to ensure that the injection molding part remains complete during demoulding, and can adapt to the demoulding requirements of injection molding parts of different shapes and sizes, improve the versatility and flexibility of the mould.

[0017] Secondly, when the sliding groove of the movable block contacts the pulley, the vertical rod on the pulley is pushed, drives the connecting block at the upper end of the vertical rod to slide in the cavity groove inside the fixed block, thereby pushing the second push rod at the upper end of the connecting block, cooperates the first push rod and the demoulding plate to carry out the first demoulding work, then the second push rod carries out the second demoulding, avoids the injection molding part of complex shape and difficult to demould by single ejection to cause demoulding difficulty, makes the demoulding process more smooth and efficient, improves the demoulding efficiency, and when the second push rod is pushed by the connecting block, the connecting block is compressed by the damping spring inside the cavity groove, avoids the pushing force generated when pushing to damage the product, thereby protecting the integrity of the product and the mould. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic diagram of the utility model;

[0019] Figure 2 It is mould cover connecting structure schematic diagram of the utility model;

[0020] Figure 3 It is mould main body transverse section structure schematic diagram of the utility model;

[0021] Figure 4 It is mould main body side section structure schematic diagram of the utility model;

[0022] Figure 5 It is movable rod connecting structure schematic diagram of the utility model;

[0023] Figure 6The utility model discloses a movable block connecting structure schematic diagram.

[0024] In the drawing: 1, installation baseplate, 2, mould main body, 3, mould cover, 4, electric push rod, 401, side block, 402, first mounting plate, 403, second mounting plate, 5, push plate, 501, first slide rail support, 502, motor, 503, screw rod, 504, sliding block, 505, movable rod, 506, first push rod, 507, demoulding plate, 6, second slide rail support, 601, movable block, 602, inclined rod, 7, fixed block, 701, cavity groove, 702, damping spring, 703, connecting block, 704, vertical rod, 705, pulley, 706, sliding slot, 707, second push rod, 8, telescopic sleeve rod. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the range of protection of the utility model.

[0026] Please refer to Figures 1-6 The utility model provides a technical scheme: based on the double ejection post mould demoulding structure of injection mould, including installation baseplate 1, the upper end surface fixed with mould main body 2 of installation baseplate 1, the upper end of mould main body 2 is provided with mould cover 3, is provided with the demoulding mechanism for injection product processing on mould main body 2, and the demoulding mechanism includes:

[0027] Lifting assembly, including the inside bottom end fixed with first slide rail support 501 of mould main body 2, the inside of first slide rail support 501 is provided with movable rod 505 connected through screw component, and the upper end of movable rod 505 is provided with push plate 5 connected through rotating shaft;

[0028] Push assembly, including the upper end fixed connection of push plate 5, and the upper end of first push rod 506 is fixed with demoulding plate 507, and the inner wall of mould main body 2 is fixed with fixed block 7, and the inside of fixed block 7 is provided with cavity groove 701, and the inside of cavity groove 701 is provided with second push rod 707 connected through elastic component, and the upper end surface of push plate 5 is provided with movable block 601 connected through sliding component.

[0029] In the preferred implementation, the threaded assembly comprises a motor 502 fixedly connected at one end of the first slide rail support 501, the output end of the motor 502 is connected with a screw rod 503, the inner wall of the first slide rail support 501 is slidingly connected with a sliding block 504, the sliding block 504 is in threaded connection with the screw rod 503, a movable rod 505 is located at the upper end of the sliding block 504, and the movable rod 505 is in rotational connection with the sliding block 504 through a rotating shaft, the lower end surface of the push plate 5 is fixedly connected with four telescopic sleeve rods 8, the lower end of the telescopic sleeve rod 8 is fixedly connected with the mold body 2, the screw rod 503 is set to rotate by the motor 502, driving the sliding block 504 to slide on the inner wall of the first slide rail support 501, then the push plate 5 is in rotational connection with the sliding block 504 through the rotating shafts at both ends of the movable rod 505, when the angle of the movable rod 505 changes, the push plate 5 is lifted along the telescopic sleeve rod 8, driving the first push rod 506 and the demolding plate 507 at the upper end of the push plate 5 to lift, through the automatic demolding process, the demolding time is greatly shortened, thereby improving the production efficiency, through the lifting of the demolding plate 507 by the first push rod 506, the uneven stress of the mold during the demolding process is reduced, and the lifting position of the demolding plate 507 is controlled by controlling the sliding distance of the sliding block 504 on the inner wall of the first slide rail support 501 to control the activity angle of the movable rod 505, which helps to ensure that the injection molded part remains intact during the demolding process, and can adapt to the demolding requirements of injection molded parts of different shapes and sizes, improving the versatility and flexibility of the mold.

[0030] In the preferred implementation, the elastic assembly includes a damping spring 702 fixedly connected to the upper end of the cavity groove 701, the lower end of the damping spring 702 is fixedly connected with a connecting block 703, the connecting block 703 is in sliding connection with the inner wall of the cavity groove 701, the lower end of the connecting block 703 is fixed with a vertical rod 704, the lower end surface of the vertical rod 704 is provided with a pulley 705, the second top rod 707 is fixedly connected to the upper end surface of the connecting block 703, the second top rod 707 is in sliding connection with the stripper plate 507, the sliding assembly includes a second sliding rail support 6 fixedly connected to the upper end surface of the push plate 5, the movable block 601 is in sliding connection with the inner wall of the second sliding rail support 6, the inner lower end of the mold body 2 is fixedly connected with an inclined rod 602 arranged obliquely, the upper end of the inclined rod 602 is in fixed connection with the fixed block 7, the movable block 601 is in sliding connection with the inclined rod 602, a sliding groove 706 is formed on the inclined surface of the movable block 601, when the push plate 5 arranged is working, the movable block 601 is lifted, then the movable block 601 slides along the inclined direction of the inclined rod 602, so that the movable block 601 slides along the second sliding rail support 6 along the direction of the pulley 705, when the sliding groove 706 of the movable block 601 contacts with the pulley 705, the vertical rod 704 on the pulley 705 is pushed, the connecting block 703 at the upper end of the vertical rod 704 slides in the cavity groove 701 in the fixed block 7, so that the second top rod 707 at the upper end of the connecting block 703 is pushed, and the first top rod 506 and the stripper plate 507 cooperate to perform the first demolding work, then the second top rod 707 performs the second demolding, avoids the difficulty of demolding caused by the complex shape of the injection molded part which is difficult to be demolded by single ejection, so that the demolding process is more smooth and efficient, and the demolding efficiency is improved, and when the second top rod 707 is pushed by the connecting block 703, the connecting block 703 is compressed by the damping spring 702 in the cavity groove 701, so as to avoid the damage to the product caused by the pushing force generated during pushing, thereby protecting the integrity of the product and the mold.

[0031] In the preferred implementation, the four ends of the mounting base 1 are fixedly connected with an electric push rod 4, the four side walls of the mold cover 3 are fixedly connected with a side block 401, the lower end surface of the side block 401 is fixedly connected with a first mounting plate 402, the telescopic end of the electric push rod 4 is fixedly connected with a second mounting plate 403, the first mounting plate 402 is connected with the second mounting plate 403 through bolts, the mold cover 3 arranged is lifted through the electric push rod 4, and the mold body 2 is opened and closed, then the mold cover 3 is detachably connected with the telescopic end of the electric push rod 4 through the first mounting plate 402 and the second mounting plate 403 through bolts, and the mold cover 3 is detached, so that each component of the mold is more easily cleaned, inspected and maintained.

[0032] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0033] When the mold product is demolded, the screw 503 is rotated by the motor 502 to drive the sliding block 504 to slide on the inner wall of the first sliding rail support 501, and then the push plate 5 is rotationally connected with the sliding block 504 through the rotating shafts at both ends of the movable rod 505, so that when the angle of the movable rod 505 changes, the push plate 5 is lifted along the telescopic sleeve rod 8, the first lifting rod 506 at the upper end of the push plate 5 and the demolding plate 507 are lifted, and the demolding time is greatly shortened through the automatic demolding process, so that the production efficiency is improved, the first lifting rod 506 is lifted to reduce the uneven stress of the mold during the demolding process, and the sliding distance of the sliding block 504 on the inner wall of the first sliding rail support 501 controls the activity angle of the movable rod 505 to control the lifting position of the demolding plate 507, which helps to ensure that the injection molded part remains intact during the demolding process.

[0034] Then, when the push plate 5 is lifted, the movable block 601 is lifted, and then the movable block 601 slides along the inclined direction of the inclined rod 602, so that the movable block 601 slides along the second sliding rail support 6 in the direction of the pulley 705, when the sliding groove 706 of the movable block 601 contacts the pulley 705, the vertical rod 704 on the pulley 705 is pushed, the connecting block 703 at the upper end of the vertical rod 704 slides in the cavity groove 701 in the fixed block 7, so that the second lifting rod 707 at the upper end of the connecting block 703 is pushed, and the first demolding of the first lifting rod 506 and the demolding plate 507 is performed, and then the second demolding of the second lifting rod 707 is performed, so that the injection molded part with complex shape and difficult to be demolded by single ejection is avoided, the demolding process is smoother and more efficient, the demolding efficiency is improved, and when the second lifting rod 707 is pushed by the connecting block 703, the connecting block 703 is compressed by the shock-absorbing spring 702 in the cavity groove 701, so that the pushing force generated during pushing does not damage the product, thereby protecting the integrity of the product and the mold.

[0035] It should be noted that in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A two-ejection post-mold demolding structure based on an injection mold, comprising a mounting base (1), an upper end surface of the mounting base (1) being fixed with a mold main body (2), an upper end of the mold main body (2) being provided with a mold cover (3), characterized in that: The mold body (2) is provided with a demolding mechanism for injection molding product processing, and the demolding mechanism comprises: The lifting assembly comprises a first sliding rail support (501) fixed at the inner bottom end of the mold body (2), an activity rod (505) connected through a threaded assembly is arranged in the first sliding rail support (501), and a push plate (5) connected through a rotating shaft is arranged at the upper end of the activity rod (505); The push assembly comprises a first push rod (506) fixedly connected to the upper end of the push plate (5), a demolding plate (507) fixed to the upper end of the first push rod (506), a fixed block (7) fixed to the inner wall of the mold body (2), a cavity groove (701) formed in the fixed block (7), and a second push rod (707) connected through an elastic assembly arranged in the cavity groove (701).

2. The injection mold based dual ejection back mold demolding structure according to claim 1, characterized in that: The threaded assembly comprises a motor (502) fixedly connected to one end of the first sliding rail support (501), a screw rod (503) connected to the output end of the motor (502), a sliding block (504) slidingly connected to the inner wall of the first sliding rail support (501), and the sliding block (504) and the screw rod (503) are in threaded connection, and the activity rod (505) is located at the upper end of the sliding block (504) and is in rotational connection with the sliding block (504) through a rotating shaft.

3. The injection mold based dual ejection back mold demolding structure according to claim 1, characterized in that: The lower end surface of the push plate (5) is fixedly connected with a telescopic sleeve rod (8), and the lower end of the telescopic sleeve rod (8) is fixedly connected with the mold body (2).

4. The injection mold based dual-ejection back mold demolding structure according to claim 1, characterized in that: The elastic assembly comprises a shock-absorbing spring (702) fixedly connected to the inner upper end of the cavity groove (701), a connecting block (703) fixedly connected to the lower end of the shock-absorbing spring (702), the connecting block (703) and the inner wall of the cavity groove (701) are in sliding connection, a vertical rod (704) fixed to the lower end of the connecting block (703), a pulley (705) arranged on the lower end surface of the vertical rod (704), and the second push rod (707) is fixedly connected to the upper end surface of the connecting block (703) and is in sliding connection with the demolding plate (507).

5. The injection mold based dual ejection back mold demolding structure according to claim 1, characterized in that: The sliding assembly comprises a second sliding rail support (6) fixed to the upper end surface of the push plate (5), the activity block (601) is in sliding connection with the inner wall of the second sliding rail support (6), an inclined rod (602) fixedly arranged at the inner lower end of the mold body (2) is in inclined arrangement, the upper end of the inclined rod (602) is fixedly connected with the fixed block (7), the activity block (601) is in sliding connection with the inclined rod (602), and a sliding groove (706) is formed in the inclined surface of the activity block (601).

6. The injection mold based dual-ejection back mold demolding structure according to claim 1, characterized in that: Four ends of the mounting base (1) are fixedly connected with electric push rods (4), four side walls of the mold cover (3) are fixedly connected with side blocks (401), the lower end surface of the side block (401) is fixedly connected with a first mounting plate (402), the telescopic end of the electric push rod (4) is fixedly connected with a second mounting plate (403), and the first mounting plate (402) and the second mounting plate (403) are connected through bolts.

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