Mould locking control device of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, in particular to a mold locking control device of an injection molding machine, which comprises a fixed mold, a movable mold is mounted at the top of the fixed mold in a sliding manner, a top plate is mounted at the top of the fixed mold in a sliding manner, the top plate is positioned at the top of the movable mold, and a limiting rod penetrates through the fixed mold, the movable mold and the top plate. The number of the limiting rods is four, the four limiting rods are distributed in a rectangular shape, a lifting structure is installed between the movable mold and the top plate, an electric push rod is fixedly installed at the top of the top plate and fixedly connected with the lifting structure, and a locking assembly is installed between the fixed mold and the movable mold. The lifting structure comprises a plurality of movable lug plates, a first connecting block, a second connecting block, a third connecting block and a lifting plate; and the movable lug plates are fixedly connected to the two ends of the top of the movable mold and the two ends of the bottom of the top plate in sequence. The mold locking device realizes quick and stable mold locking, can assist in reinforcement, and improves the mold locking performance and the product quality of the injection molding machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding machine technical field, especially injection molding machine's mould locking control device. BACKGROUND

[0002] With social development, injection molding machine plays a very key role in modern manufacturing, injection molding machine can utilize plastic forming mould to make various shapes plastic products of thermoplastic or thermosetting plastic, is widely used in automobile, electronics, household appliances, medical treatment and many other industries, it realizes high -efficient, large -scale plastic product production through accurate control plastic heating, melting, injection, pressure maintaining, cooling process, the importance of injection molding machine not only reflects its complex shape, high precision plastic products that can be quickly, batch production, meet the huge demand of market for various plastic products, and has irreplaceable effect for improving product quality, reducing production cost, improving production efficiency.

[0003] However, the existing injection molding machine uses the mould locking process to injection molding, each injection molding needs to wait for the reliable locking of mould, and the increase of mould locking time directly affects the product output per unit time, and the unfirm mould locking can cause the slight displacement or gap of mould under the action of injection pressure, so that the plastic melt overflows, forms the flash, burr and other defects, and affects the appearance quality and dimensional accuracy of product. UTILITY MODEL CONTENTS

[0004] The utility model discloses a mould locking control device of injection molding machine.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a mould locking control device of injection molding machine, including fixed mould, the top of fixed mould is slidably installed with movable mould, the top of fixed mould is slidably installed with top board, and the top board is located at the top of movable mould, and the fixed mould, movable mould and top board are penetrated with limiting rod, the limiting rod has four rectangular distribution, the movable mould is installed with lifting structure between top board, the top of top board is fixedly installed with electric push rod, and the electric push rod is fixedly connected with lifting structure, and the fixed mould is installed with locking assembly between movable mould;

[0006] The lifting structure comprises movable lug plates, a first connecting block, a second connecting block, a third connecting block and a lifting plate, the movable lug plates are sequentially fixedly connected at both ends of the top of the movable die and both ends of the bottom of the top plate, the first connecting block is movably mounted on the movable lug plate at the top of the movable die, the second connecting block is fixedly mounted on the movable lug plate at the bottom of the top plate, the movable lug plate is movably connected with the end of the first connecting block, the third connecting block is movably mounted on the connecting point at the ends of the first connecting block and the second connecting block, and the lifting plate is movably mounted at the ends of the two third connecting blocks.

[0007] Further, the connecting ends between the movable lug plate, the first connecting block, the second connecting block, the third connecting block and the lifting plate are fixedly mounted with movable shafts.

[0008] Further, the push rod of the electric push rod penetrates the top plate, and the push rod of the electric push rod is fixedly mounted at the top of the lifting plate.

[0009] Further, the outer wall of the limiting rod is provided with threads at both ends, the bottom of the fixed die is fixedly connected with first nuts, the first nuts are in a rectangular distribution, the limiting rod is bolted in the interior of the first nuts and penetrates the fixed die, and the fixed die penetrates the movable die and the top plate.

[0010] Further, the second nut is fixedly mounted on the threads at the top of the limiting rod, and the second nut is movably mounted at the top of the top plate.

[0011] Further, the locking assembly comprises mounting blocks, mounting grooves, lock blocks and clamping blocks, the mounting blocks are fixedly connected at the two sides of the outer wall of the fixed die, the mounting grooves are formed in the interiors of the mounting blocks, the lock blocks are fixedly connected at the two sides of the outer wall of the movable die, the lock blocks are located in the interiors of the mounting grooves, and the clamping blocks are slidably mounted in the interiors of the first nuts and located at the top of the lock blocks.

[0012] Further, springs are fixedly mounted in the interiors of the mounting grooves, and the springs are fixedly connected with the clamping blocks at the ends away from the inner walls of the mounting grooves.

[0013] Further, the rear end of the clamping block is fixedly connected with a pull rod, and the end of the pull rod away from the clamping block is movably mounted with a pull ring.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] 1. Compared with the prior art, the die, the movable die, the first connecting block, the second connecting block, the third connecting block, the lifting plate and the electric push rod are arranged, the push rod pushes the lifting plate to move downwards, the third connecting block is movably connected with the lifting plate, the downward movement of the lifting plate drives the third connecting block to move, the third connecting block is connected with the end connecting points of the first connecting block and the second connecting block, so that the relative positions of the first connecting block and the second connecting block are changed, the force applied on the lifting plate by the electric push rod is effectively amplified through the mechanical structure combination, and the movable die can be quickly and firmly combined with the die under sufficient pressure. The mold stability during the injection molding process is ensured, the product defects such as flash and burr are reduced, and the product quality is improved.

[0016] 2. Compared with the prior art, the die, the movable die, the lifting plate, the electric push rod, the mounting block, the mounting groove, the locking block, the clamping block, the pull rod, the spring and the pull ring are arranged, when the movable die is combined with the die, the locking block on the outer wall of the movable die enters the mounting groove of the mounting block on the outer wall of the die, at this time, the spring in the mounting groove pushes the clamping block to be clamped into the top of the locking block, the movable die is further fixed, and the mold locking process is completed. When the injection molding is completed and the mold needs to be opened, the operator pulls the pull ring, the clamping block is driven outwardly away from the locking block through the pull rod, and then the electric push rod pushes the lifting plate upwardly in reverse, drives the movable die to move upwardly, and the mold opening operation is realized. The mold can be further fixed, displacement or loosening of the mold under the action of the injection molding pressure is prevented, the reliability of the mold locking is enhanced, and the service life of the mold is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a structure schematic view of the utility model not in use;

[0019] Figure 3 It is an explosion structure schematic view of the utility model;

[0020] Figure 4 It is Figure 3 It is an enlarged structure schematic view of A in the middle;

[0021] Figure 5 It is Figure 3 It is an enlarged structure schematic view of B in the middle.

[0022] Legend:

[0023] 1, fixed mold; 2, movable mold; 3, top plate; 4, limiting rod; 401, thread; 402, first nut; 403, second nut; 5, lifting structure; 501, movable lug plate; 502, first connecting block; 503, second connecting block; 504, third connecting block; 505, lifting plate; 506, movable shaft; 6, electric push rod; 7, locking assembly; 701, mounting block; 702, mounting groove; 703, locking block; 704, clamping block; 705, pull rod; 706, spring; 707, pull ring. DETAILED DESCRIPTION

[0024] Referring to Figures 1-5 The utility model provides a kind of mold locking control device of injection molding machine: including fixed mold 1, movable mold 2 is slidably installed in the top of fixed mold 1, top plate 3 is slidably installed in the top of fixed mold 1, top plate 3 is located in the top of movable mold 2, limiting rod 4 is penetrated between fixed mold 1, movable mold 2 and top plate 3, limiting rod 4 has four rectangular distributions, lifting structure 5 is installed between movable mold 2 and top plate 3, electric push rod 6 is fixedly installed in the top of top plate 3, electric push rod 6 is fixedly connected with lifting structure 5, locking assembly 7 is installed between fixed mold 1 and movable mold 2;Lifting structure 5 includes movable lug plate 501, first connecting block 502, second connecting block 503, third connecting block 504 and lifting plate 505, movable lug plate 501 has multiple and is fixedly connected in sequence in the top of movable mold 2 both ends and the bottom of top plate 3 both ends, first connecting block 502 is movably installed on movable lug plate 501 in the top of movable mold 2, second connecting block 503 is fixedly installed on movable lug plate 501 in the bottom of top plate 3, movable lug plate 501 is movably connected with the end of first connecting block 502, third connecting block 504 is movably installed on the connecting point of the end of first connecting block 502 and second connecting block 503, lifting plate 505 is movably installed in the end of two third connecting blocks 504.

[0025] When in use, the electric push rod 6 is started, the push rod pushes the lifting plate 505 to move downward, because the third connecting block 504 is movably connected with the lifting plate 505, the downward movement of the lifting plate 505 drives the third connecting block 504 to move, the third connecting block 504 is connected with the end connecting points of the first connecting block 502 and the second connecting block 503, so that the relative positions of the first connecting block 502 and the second connecting block 503 change, the first connecting block 502 is movably connected with the movable lug plate 501 on the top of the movable die 2 and movably connected with the second connecting block 503 at the end, so that the first connecting block 502 rotates around the movable lug plate 501 and pushes the movable die 2 to move downward under the driving of the third connecting block 504, through the combination of the mechanical structure, the force applied on the lifting plate 505 by the electric push rod 6 is effectively amplified, so that the movable die 2 obtains sufficient pressure to quickly contact with the fixed die 1, the rapid mold locking is realized, and the stability of the connecting structure ensures the firmness of the mold locking, when the movable die 2 contacts with the fixed die 1 to be combined, the movable die 2 and the fixed die 1 are locked together through the locking assembly 7.

[0026] The connecting ends among the movable lug plate 501, the first connecting block 502, the second connecting block 503, the third connecting block 504 and the lifting plate 505 are fixedly provided with movable shafts 506.

[0027] The movable shafts 506 provide rotation centers for the movable connection among the components, so that the connecting components can flexibly rotate around the shafts, in the movement process of the lifting structure 5, the friction resistance among the components is reduced, and the force transmission is smooth.

[0028] The push rod of the electric push rod 6 penetrates through the top plate 3, and the push rod of the electric push rod 6 is fixedly installed on the top of the lifting plate 505.

[0029] The electric push rod 6 serves as a power source, the push rod of the electric push rod 6 is directly connected with the lifting plate 505, when the electric push rod 6 receives a control signal to start, the extension and retraction movement of the push rod can be accurately transmitted to the lifting plate 505, so as to drive the whole lifting structure 5 to work, realize the accurate control on the position of the movable die 2, and ensure the smooth mold locking process.

[0030] The outer wall of the limiting rod 4 is provided with threads 401 at both ends, the bottom of the fixed die 1 is fixedly connected with first nuts 402, the first nuts 402 are four rectangularly distributed, the limiting rod 4 is bolted in the inside of the first nuts 402 and penetrates through the fixed die 1, the fixed die 1 penetrates through the movable die 2 and the top plate 3.

[0031] The first nuts 402 are matched with the threads of the limiting rod 4, the limiting rod 4 is firmly fixed on the bottom of the fixed die 1, a stable basic structure is provided for the sliding of the movable die 2 and the top plate 3 on the limiting rod 4, it is ensured that the movable die 2 does not deviate in the lifting process, the movable die 2 and the fixed die 1 can be accurately aligned, the precision and reliability of the mold locking are improved.

[0032] The top of the limiting rod 4 is fixedly installed with a second nut 403, which is movably installed on the top of the top plate 3.

[0033] The second nut 403 is connected with the limiting rod 4 in a threaded manner, and the position of the second nut 403 on the limiting rod 4 can be adjusted by rotating the second nut 403, so as to change the height position of the top plate 3 on the limiting rod 4, and realize the fine adjustment of the distance between the top plate 3 and the movable mold 2, facilitate the adaptation to different mold height requirements in the installation and debugging process, ensure the normal work of the lifting structure 5, and further improve the applicability of the device.

[0034] The locking assembly 7 comprises a mounting block 701, a mounting groove 702, a lock block 703 and a clamping block 704. The mounting block 701 is fixedly connected to the outer wall of the fixed mold 1 on both sides, the mounting groove 702 is arranged in the interior of the mounting block 701, the lock block 703 is fixedly connected to the outer wall of the movable mold 2 on both sides, the lock block 703 is located in the interior of the mounting groove 702, and the clamping block 704 is slidably installed in the interior of the first nut 402 and located on the top of the lock block 703.

[0035] When the movable mold 2 moves downward to close the mold with the fixed mold 1, the lock block 703 on the outer wall of the movable mold 2 enters the mounting groove 702 of the mounting block 701 on the outer wall of the fixed mold 1, at this time, the clamping block 704 slides outward under the elastic force of the spring 706 and is clamped into the top of the lock block 703, thereby locking the lock block 703 in the mounting groove 702, so as to further fix the movable mold 2, prevent the movable mold 2 from being displaced or loosened due to the injection pressure during the injection molding process, and enhance the overall stability of the mold locking.

[0036] The interior of the mounting groove 702 is fixedly installed with a spring 706, and the end, away from the inner wall of the mounting groove 702, of the spring 706 is fixedly connected with the clamping block 704.

[0037] The spring 706 is always in a compressed state and provides an inward elastic force for the clamping block 704. During the closing process of the movable mold 2, when the lock block 703 enters the mounting groove 702, the elastic force of the spring 706 enables the clamping block 704 to be quickly clamped above the lock block 703, so as to realize the automatic locking function and ensure the timeliness and reliability of the locking action, without the need for additional power driving, thereby simplifying the structure of the device.

[0038] The rear end of the clamping block 704 is fixedly connected with a pull rod 705, and the end, away from the clamping block 704, of the pull rod 705 is movably installed with a pull ring 707.

[0039] When the mold needs to be opened, the operator can pull the pull ring 707, the pull ring 707 drives the pull rod 705 to move upward, so that the clamping block 704 overcomes the elastic force of the spring 706 and slides upward, disengages from the locking block 703, releases the locking of the movable mold 2, facilitates the opening operation of the mold, and improves the operation convenience of the device.

[0040] Working principle: Before the injection molding machine works, first adjust the position of the top plate 3 on the limiting rod 4 by rotating the second nut 403 according to the mold height, so that the lifting structure 5 is in a suitable initial state.

[0041] When the injection molding machine starts to work, the electric push rod 6 receives a control signal to start, and the push rod pushes the lifting plate 505 to move downward. Under the cooperative action of the movable ear plate 501, the first connecting block 502, the second connecting block 503, the third connecting block 504 and the movable shaft 506, the movable mold 2 moves downward and approaches the fixed mold 1.

[0042] When the movable mold 2 contacts the fixed mold 1 to close the mold, the locking block 703 on the outer wall of the movable mold 2 enters the mounting groove 702 of the mounting block 701 on the outer wall of the fixed mold 1. At this time, the spring 706 in the mounting groove 702 pushes the clamping block 704 inward to clamp into the top of the locking block 703, further fixes the movable mold 2, and completes the mold locking process.

[0043] During the injection molding process, the locking assembly 7 prevents the movable mold 2 from displacing due to the injection molding pressure, ensuring the stability of the mold.

[0044] When the injection molding is completed and the mold needs to be opened, the operator pulls the pull ring 707, and the clamping block 704 is driven outward from the locking block 703 through the pull rod 705, and then the electric push rod 6 reversely pushes the lifting plate 505 to rise, drives the movable mold 2 to rise, and realizes the mold opening operation.

[0045] Finally, it should be pointed out that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A locking control device for an injection molding machine comprising a stationary mold (1), characterized in that: The top of the fixed mold (1) is slidably installed with a movable mold (2), the top of the fixed mold (1) is slidably installed with a top plate (3), the top plate (3) is located at the top of the movable mold (2), the fixed mold (1), the movable mold (2) and the top plate (3) are penetrated by a limiting rod (4), the limiting rod (4) has four rectangular distributions, a lifting structure (5) is installed between the movable mold (2) and the top plate (3), the top of the top plate (3) is fixedly installed with an electric push rod (6), the electric push rod (6) is fixedly connected with the lifting structure (5), a locking assembly (7) is installed between the fixed mold (1) and the movable mold (2). The lifting structure (5) comprises movable lug plates (501), first connecting blocks (502), second connecting blocks (503), third connecting blocks (504) and lifting plates (505), the movable lug plates (501) are fixedly connected with the top of the movable mold (2) and the bottom of the top plate (3) in sequence, the first connecting blocks (502) are movably installed on the movable lug plates (501) at the top of the movable mold (2), the second connecting blocks (503) are fixedly installed on the movable lug plates (501) at the bottom of the top plate (3), the movable lug plates (501) are movably connected with the first connecting blocks (502), the third connecting blocks (504) are movably installed on the connecting points at the ends of the first connecting blocks (502) and the second connecting blocks (503), and the lifting plates (505) are movably installed at the ends of the two third connecting blocks (504).

2. The clamp control apparatus for an injection molding machine according to claim 1, wherein: Movable shafts (506) are fixedly installed between the connecting ends of the movable lug plates (501), the first connecting blocks (502), the second connecting blocks (503), the third connecting blocks (504) and the lifting plates (505).

3. The clamp control apparatus for an injection molding machine according to claim 1, wherein: The push rod of the electric push rod (6) penetrates the top plate (3), and the push rod of the electric push rod (6) is fixedly installed at the top of the lifting plate (505).

4. The clamp control apparatus for an injection molding machine according to claim 1, wherein: Threaded holes (401) are formed in the two ends of the outer wall of the limiting rod (4), the first nuts (402) are fixedly connected to the bottom of the fixed mold (1), the first nuts (402) have four rectangular distributions, the limiting rod (4) is bolted to the inside of the first nut (402) and penetrates the fixed mold (1), and the fixed mold (1) penetrates the movable mold (2) and the top plate (3).

5. The clamp control apparatus for an injection molding machine according to claim 4, wherein: Second nuts (403) are fixedly installed on the threaded holes (401) at the top of the limiting rod (4), and the second nuts (403) are movably installed at the top of the top plate (3).

6. The clamp control apparatus for an injection molding machine according to claim 1, wherein: The locking assembly (7) comprises mounting blocks (701), mounting grooves (702), lock blocks (703) and clamping blocks (704), the mounting blocks (701) are fixedly connected to the two sides of the outer wall of the fixed mold (1), the mounting grooves (702) are formed in the inside of the mounting blocks (701), the lock blocks (703) are fixedly connected to the two sides of the outer wall of the movable mold (2), the lock blocks (703) are located in the inside of the mounting grooves (702), and the clamping blocks (704) are slidably installed in the inside of the first nuts (402) and located at the top of the lock blocks (703).

7. The clamp control apparatus for an injection molding machine according to claim 6, wherein: The inside of the mounting groove (702) is fixedly mounted with a spring (706), and one end of the spring (706) away from the inner wall of the mounting groove (702) is fixedly connected with the clamping block (704).

8. The clamp control apparatus for an injection molding machine according to claim 6, wherein: The rear end of the clamping block (704) is fixedly connected with a pull rod (705), and one end of the pull rod (705) away from the clamping block (704) is movably mounted with a pull ring (707).

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