A rapid mold changing and locking structure for injection mold

Abstract

The utility model provides a kind of injection mold quick die changing locking structure, it is related to injection mold technical field, including: mold support frame, injection mold is arranged in the inside of mold support frame, the ejection assembly is arranged in the bottom of mold support frame, for ejecting injection mold, the ejection assembly includes: hydraulic rod, lifting plate, aperture and through-hole, fixed assembly is arranged between injection mold and mold support frame, for fixing injection mold.This kind of injection mold quick die changing locking structure is driven by hydraulic pressure and trajectory constraint by ejection assembly, so as to eject injection mold from inside mold support frame and change, so as to improve die changing efficiency and security, by fixed assembly with the aid of mechanical locking and elastic cooperation, quickly complete injection mold fixing and disassembly, the whole process does not need complex tool, greatly shorten die changing time, the close cooperation of mechanical structure also ensures the stability of mold in the process of injection molding.

Description

Technical Field

[0001] This utility model relates to the technical field of injection mold changing equipment, specifically a quick mold changing and locking structure for injection molds. Background Technology

[0002] Injection molds are tools used for molding plastic products and are widely used in the manufacturing industry. In the injection molding process, molten plastic material is injected into the mold cavity under high pressure, and after cooling and solidification, it forms a plastic product of the required shape. In existing molds, the mold blank is generally locked to the template with screws. The bolt tightening force is too large, and the disassembly and assembly process of the mold blank is cumbersome and difficult, which reduces the efficiency of mold blank replacement, increases labor costs, and affects the production schedule.

[0003] To address the aforementioned issues, patent application CN202420264155.5 discloses a "quick mold changing structure" that uses snap-fit ​​mounting blocks and snap-fit ​​slots to securely install the injection mold platen, facilitating quick and easy disassembly. However, this device still has certain drawbacks in practical use. For example, when disassembling the injection mold, the device uses a rebound spring and an auxiliary rebound plate to lift the mold, but the injection mold itself is quite heavy, and the spring force alone is insufficient to lift it. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a quick mold changing and locking structure for injection molds. The ejector component is hydraulically driven and constrained to eject the mold for mold changing, which improves efficiency and safety. The fixing component is mechanically locked and elastically matched, which allows for quick fixing and disassembly, saves tools, saves time, and ensures stability.

[0005] The technical problem to be solved by this utility model is achieved by the following technical solution:

[0006] A quick mold change and locking structure for injection molds includes: a mold support frame, an injection mold disposed inside the mold support frame, and an ejection assembly disposed at the bottom of the mold support frame for ejecting the injection mold. The ejection assembly includes: a hydraulic rod, a lifting plate, an opening, and a through hole. A fixing assembly is disposed between the injection mold and the mold support frame for fixing the injection mold. The fixing assembly includes: a slot, a locking block, a limiting block, and a limiting groove.

[0007] Optionally, hydraulic rods are installed on both sides of the bottom of the mold support frame, and lifting plates are installed at the top of the hydraulic rods. Two openings are opened on one side of the inner wall of the mold support frame, and two through holes are opened at the bottom of the mold support frame. The two openings are respectively connected to the two through holes, and the two lifting plates are respectively located inside the two openings. The ejection assembly composed of hydraulic rods, lifting plates, openings and through holes is used to eject the injection mold.

[0008] Optionally, the injection mold has slots on both sides of its outer end, with a locking block inside each slot. Two limiting blocks are installed on both sides of the inner wall of the mold support frame. Two limiting grooves are also provided on both sides of the outer end of the injection mold. Fixed blocks are installed on both sides of the outer end of the mold support frame. A movable groove is provided on one side of the outer end of each fixed block. Through grooves are provided on both sides of the inner wall of the mold support frame. One end of the locking block extends into the through groove and the movable groove. Sliding grooves are provided on both sides of the inner wall of the movable groove. Slider blocks are installed on both sides of the outer end of the locking block. A spring is provided between one side of the outer end of the slider and the sliding groove. A limiting rod is installed inside the movable groove. One end of the limiting rod passes through the spring and the slider. A crossbar is connected to one end of the locking block via a pivot. Two locking rods are connected to the outside of the crossbar. Two side plates are installed on one side of the outer end of the fixed block. A groove is provided on one side of the outer end of each side plate. The fixing assembly consisting of the slots, locking blocks, limiting blocks, and limiting grooves is used to fix the injection mold.

[0009] The beneficial effects of this utility model are:

[0010] The advantage of this utility model is that by using hydraulic drive and trajectory constraint for the ejection component, the injection mold can be ejected from inside the mold support frame for replacement, thereby improving mold changing efficiency and safety.

[0011] Secondly, by using mechanical locking and elastic coordination through the fixing components, the fixing and disassembly of the injection mold can be completed quickly. The whole process does not require complicated tools, which greatly shortens the mold change time. At the same time, the tight coordination of the mechanical structure also ensures the stability of the mold during the injection process. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0014] Figure 3 This is a schematic diagram of the mold support frame structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the injection mold structure of this utility model.

[0016] Figure 5 This is a schematic diagram of the fixing block structure of this utility model.

[0017] Figure 6 This is a schematic diagram of the card block structure of this utility model.

[0018] Figure 7 This is a schematic diagram of the lifting plate structure of this utility model.

[0019] Figure 8 This is a schematic diagram of the hydraulic rod structure of this utility model.

[0020] Figure 9 For the present utility model Figure 2 Enlarged view of point A in the image.

[0021] Figures 1-9 In the middle: 1-Mold support frame; 101-Injection mold; 2-Hydraulic rod; 201-Lifting plate; 202-Opening; 203-Through hole; 3-Slot; 301-Slot block; 302-Limit block; 303-Limit groove; 4-Fixing block; 401-Moving groove; 402-Through groove; 5-Slide groove; 501-Slider; 502-Spring; 503-Limit rod; 6-Horizontal bar; 601-Slot rod; 602-Side plate; 603-Groove. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1-9 As shown, a quick mold change and locking structure for injection molds includes: a mold support frame 1, an injection mold 101 is disposed inside the mold support frame 1, and an ejection assembly is disposed at the bottom of the mold support frame 1 for ejecting the injection mold 101. The ejection assembly includes: a hydraulic rod 2, a lifting plate 201, an opening 202 and a through hole 203. A fixing assembly is disposed between the injection mold 101 and the mold support frame 1 for fixing the injection mold 101. The fixing assembly includes: a slot 3, a block 301, a limiting block 302 and a limiting groove 303.

[0025] Hydraulic rods 2 are installed on both sides of the bottom of the mold support frame 1. A lifting plate 201 is installed on the top of the hydraulic rod 2. Two openings 202 are opened on one side of the inner wall of the mold support frame 1, and two through holes 203 are opened at the bottom of the mold support frame 1. The two openings 202 are connected to the two through holes 203 respectively. The two lifting plates 201 are located inside the two openings 202 respectively. The mold support frame 1 forms the basic frame for supporting the injection mold 101 and provides installation support for the hydraulic rods 2. The through holes 203 at its bottom allow the hydraulic rods 2 to pass through and connect with the lifting plates 201. The hydraulic rods 2 drive the lifting plates 201 to move vertically along the openings 202 through extension and retraction, so as to realize the ejection and resetting of the injection mold. The openings 202 and the through holes 203 are connected to each other, providing a movement path for the lifting plates 201 and the hydraulic rods 2, ensuring the stable operation of the ejection assembly, and the openings 202 can accommodate the lifting plates 201.

[0026] The injection mold 101 has slots 3 on both sides of its outer end, and a locking block 301 is installed inside the slot 3. Two limiting blocks 302 are installed on both sides of the inner wall of the mold support frame 1. Two limiting grooves 303 are opened on both sides of the outer end of the injection mold 101. The slots 3 on the outer end of the injection mold 101 cooperate with the locking blocks 301 on the inner wall of the mold support frame 1 to achieve lateral locking of the mold. The limiting blocks 302 and the limiting grooves 303 provide guidance during mold installation, limit the horizontal displacement of the mold, and ensure that the mold falls accurately into the predetermined position, creating conditions for the subsequent insertion of the locking blocks 301 into the slots 3.

[0027] The mold support frame 1 has fixed blocks 4 installed on both sides of its outer end. The fixed blocks 4 have a movable groove 401 on one side of their outer end. The mold support frame 1 has through grooves 402 on both sides of its inner wall. One end of the locking block 301 extends into the through groove 402 and the movable groove 401. The fixed blocks 4 provide a mounting base for the movable groove 401 and the side plate 602. The movable groove 401 accommodates the slider 501 and the spring 502, providing space for the horizontal movement of the locking block 301. The through groove 402 connects the inside and outside of the mold support frame 1, allowing the locking block 301 to pass through the through groove 402 and dock with the mold locking groove 3, forming a complete locking path.

[0028] The movable groove 401 has sliding grooves 5 on both sides of its inner wall. The block 301 has sliders 501 installed on both sides of its outer end. A spring 502 is installed between the outer end of the slider 501 and the sliding groove 5. A limit rod 503 is installed inside the movable groove 401. One end of the limit rod 503 passes through the spring 502 and the slider 501. The sliding groove 5 cooperates with the slider 501 to constrain the movement trajectory of the block 301 and ensure its linear movement. The spring 502 pushes the slider 501 with elastic force, so that the block 301 is inserted into the slot 3 to lock. The limit rod 503 passes through the spring 502 and the slider 501 to prevent the spring from twisting and to limit the stroke of the slider 501, thus ensuring the stability of the locking action.

[0029] One end of the locking block 301 is connected to a crossbar 6 via a pivot. Two locking rods 601 are connected to the outside of the crossbar 6. Two side plates 602 are installed on one side of the outer end of the fixing block 4. A groove 603 is provided on one side of the outer end of the side plate 602. By placing the locking rod 601 inside the groove 603, the side plate 602 and the groove 603 limit the locking rod 601, thereby fixing the position of the crossbar 6 and the locking block 301 and preventing the locking block 301 from affecting the replacement of the injection mold.

[0030] Working principle:

[0031] When it is necessary to install the injection mold 101, the operator first places the injection mold along the guide trajectory of the limiting block 302 and the limiting groove 303 of the injection mold itself on the inner wall of the mold support frame 1. During this process, the cooperation between the limiting block 302 and the limiting groove 303 is used to limit the displacement of the mold in the horizontal direction, laying the foundation for the subsequent locking operation.

[0032] Next, after placing the injection mold inside the mold support frame 1, the operator first pulls the crossbar 6 outward to slide it out of the groove 603. Then, by adjusting the crossbar 6, the locking rod 601 is rotated 90 degrees, releasing the position restriction of the locking rod 601 and the crossbar 6 by the side plate 602, so that the locking rod 601 releases the restriction on the movement of the locking block 301. At this time, the spring 502, which was originally in a compressed state, begins to release its elastic force, pushing the slider 501 to slide along the slide groove 5. The slider 501 then drives the locking block 301 to move synchronously. Under the guidance of the limit rod 503, the locking block 301 moves precisely until one end of it is inserted into the locking groove 3 at the outer end of the injection mold, thus completing the mold fixing.

[0033] When mold replacement is required, pull the crossbar 6 outward. The locking block 301 overcomes the elastic force of the spring 502 and moves outward along the slide groove 5 until it is completely out of the slot 3 of the injection mold. At this time, rotate the crossbar 6 and the locking block 601 90 degrees and place the locking block 601 inside the groove 603. The locking block 601 is limited by the side plate 602 and the groove 603, thereby fixing the position of the crossbar 6 and the locking block 301 and preventing the locking block 301 from affecting the replacement of the injection mold. Subsequently, activate the hydraulic rods 2 on both sides of the bottom of the mold support frame 1. The lifting plate 201 at the top of the hydraulic rod 2 lifts upward along the opening 202 of the mold support frame 1, ejecting the injection mold 101 as a whole.

[0034] The new injection mold assembly is placed on top of the lifting plate 201. Then, the lifting plate 201 and the injection mold are lifted and lowered by the hydraulic rod 2, so that the injection mold is placed into the mold support frame 1 along the guide of the limiting block 302 and the limiting groove 303. Then, according to the above mold locking stage operation, the locking block 301 is inserted into the locking groove 3 to fix the injection mold.

[0035] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0036] The above provides a detailed description of a quick mold change and locking structure for injection molds provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A quick mold change locking structure for injection molds, characterized in that, include: A mold support frame (1) is provided inside the mold support frame (1), and an ejection assembly is provided at the bottom of the mold support frame (1) for ejecting the injection mold (101). The ejection assembly includes: a hydraulic rod (2), a lifting plate (201), an opening (202), and a through hole (203). A fixing assembly is provided between the injection mold (101) and the mold support frame (1) for fixing the injection mold (101). The fixing assembly includes: a slot (3), a block (301), a limiting block (302), and a limiting groove (303).

2. The quick mold change locking structure for injection molds according to claim 1, characterized in that, Hydraulic rods (2) are installed on both sides of the bottom of the mold support frame (1). A lifting plate (201) is installed at the top of the hydraulic rod (2). Two openings (202) are opened on one side of the inner wall of the mold support frame (1). Two through holes (203) are opened at the bottom of the mold support frame (1). The two openings (202) are connected to the two through holes (203) respectively. The two lifting plates (201) are located inside the two openings (202) respectively.

3. The quick mold change locking structure for injection molds according to claim 1, characterized in that, The injection mold (101) has slots (3) on both sides of its outer end, and a locking block (301) is provided inside the slot (3). Two limiting blocks (302) are installed on both sides of the inner wall of the mold support frame (1). Two limiting grooves (303) are provided on both sides of the outer end of the injection mold (101).

4. The quick mold change locking structure for injection molds according to claim 3, characterized in that, The mold support frame (1) has fixed blocks (4) installed on both sides of its outer end. The fixed blocks (4) have a movable groove (401) on one side of their outer end. The mold support frame (1) has through grooves (402) on both sides of its inner wall. One end of the locking block (301) extends into the through groove (402) and the movable groove (401).

5. The quick mold change locking structure for injection molds according to claim 4, characterized in that, The movable groove (401) has sliding grooves (5) on both sides of its inner wall. The block (301) has sliders (501) installed on both sides of its outer end. A spring (502) is provided between the outer end of the slider (501) and the sliding groove (5). A limit rod (503) is installed inside the movable groove (401). One end of the limit rod (503) passes through the spring (502) and the slider (501).

6. The quick mold change locking structure for injection molds according to claim 4, characterized in that, One end of the card block (301) is connected to a crossbar (6) via a pivot. Two card rods (601) are connected to the outside of the crossbar (6). Two side plates (602) are installed on one side of the outer end of the fixing block (4). A groove (603) is provided on one side of the outer end of the side plate (602).

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