An injection mold system with a front mold assisted ejection mechanism

Abstract

The utility model discloses a kind of injection mould systems of front mould auxiliary ejection mechanism, the utility model relates to injection mould technical field, including support and back template, electric push rod is provided on the support, the output end of the electric push rod is connected with front mould, back mould is provided on the back template, and the cavity bottom of front mould is uniformly slid through and is penetrated with ejector rod, the bottom of the ejector rod is evenly provided with the connecting rod of inverted L type, the top of the connecting rod is provided with the spring connected with front mould;Two baffles are provided on the support, the two baffles are respectively opposite with the horizontal end above of two sides connecting rod, when clamping, the upper and lower sides of connecting rod horizontal end are respectively contacted with baffle and limiting frame, so that connecting rod can be fixed during injection molding, and then make that ejector rod will not move, so as to avoid the case that product appears flaw, and without artificial fixed ejector rod, so that the injection mould system of the utility model is ingenious in design, simple structure, easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold system with a front mold auxiliary ejection mechanism. Background Technology

[0002] Injection molding is a processing method used for mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product. The existing patent announcement number CN220052721U discloses an injection mold with a front mold ejection mechanism. The front mold has guide grooves in the middle of both sides of its bottom. An ejector rod is fitted inside the guide groove, and a push rod is provided at the bottom of the ejector rod, extending to the outside of the guide groove. A spring B is fitted on the outside of the ejector rod. In this prior art, during product injection molding, an electric push rod pushes the front mold upwards to close with the rear mold. After product injection is complete, the electric push rod is activated again to move the front mold downwards. After the front mold reaches the designated position, the push rod at its bottom contacts the base. Then, the push rod pushes the ejector rod upwards, overcoming the elastic force of spring B, automatically ejecting the molded product from the cavity. Thus, this prior art can automatically eject the molded product from the mold after injection, avoiding burns to workers who may touch the mold while handling materials, and improving the safety of the device.

[0003] However, in actual use, since the ejection structure is not fixed, if the ejection structure moves unexpectedly during the injection molding process, it will affect the shape of the cavity, resulting in product defects. In order to improve the quality of products injected by injection molds with front mold auxiliary ejection mechanisms, it is necessary to improve the existing injection mold system. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an injection mold system with a front mold auxiliary ejection mechanism, which solves the problems existing in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold system with a front mold auxiliary ejection mechanism, comprising a support and a rear mold plate. An electric push rod is mounted on the support, the output end of which is connected to the front mold. A rear mold is mounted on the rear mold plate. An ejector rod slides evenly through the bottom of the cavity of the front mold. Each ejector rod has an inverted L-shaped connecting rod at its bottom, and a spring connected to the front mold is mounted on the top of the connecting rod. Two baffles are mounted on the support, each baffle facing the horizontal ends of the connecting rods on both sides. Limiting frames are mounted on both sides of the bottom of the front mold, and these limiting frames contact the lower horizontal ends of the connecting rods on both sides.

[0006] Preferably, a cushioning pad is adhered to the bottom of the vertical end of the connecting rod.

[0007] Preferably, the bracket includes a connecting plate, and mounting plates are detachably connected to both sides of the top of the connecting plate. The tops of both mounting plates are detachably connected to a fixed plate, and both side baffles are detachably connected to the fixed plate. The electric push rod is detachably connected to the connecting plate.

[0008] Preferably, the top four sides of the fixed plate are provided with guide posts that are connected to the rear template, and the four sides of the front mold are provided with guide blocks that are slidably sleeved on the guide posts, and the baffle is located between the front and rear guide blocks.

[0009] Preferably, the fixing plate has two through slots, which are respectively opposite to two limiting frames.

[0010] Preferably, the fixed plate is provided with a screw lifting mechanism, which is used to lift the baffle frame. The baffle frame is located directly below the buffer pad, and the output end of the electric push rod passes through the fixed plate and through the baffle frame.

[0011] This invention provides an injection mold system with a front mold auxiliary ejection mechanism. Compared with the prior art, it has the following advantages: 1. In this injection mold system with front mold auxiliary ejection mechanism, when the mold is closed, the upper and lower sides of the horizontal end of the connecting rod contact the baffle and the limit frame respectively, so that the connecting rod can be fixed during injection, thereby preventing the ejection rod from moving and avoiding product defects. Moreover, there is no need to manually fix the ejection rod. Therefore, this injection mold system is ingeniously designed, simple in structure, and easy to maintain.

[0012] 2. The injection mold system with front mold auxiliary ejection mechanism uses a screw lifting mechanism to raise and lower the baffle frame, making the baffle frame height adjustable. This allows the product to be ejected without affecting its removal after mold opening, while also blocking the connecting rod in advance. This shortens the retraction stroke of the electric push rod, improves the removal efficiency, and reduces costs. By setting a through slot, the limit frame is not obstructed when it moves downward. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model after mold assembly; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 3 This is a schematic diagram of the ejector rod, connecting rod, spring, and buffer pad of this utility model; Figure 4 This is a schematic diagram of the bracket, screw lifting mechanism, baffle frame, and through groove of this utility model; Figure 5 This utility model Figure 2 A side view diagram.

[0014] In the diagram: 1. Bracket; 2. Electric push rod; 3. Front mold; 4. Rear mold plate; 5. Rear mold; 6. Ejector rod; 7. Connecting rod; 8. Spring; 9. Baffle; 10. Limiting frame; 11. Buffer pad; 12. Screw lifting mechanism; 13. Baffle frame; 14. Through groove; 15. Connecting plate; 16. Mounting plate; 17. Fixing plate; 18. Guide post; 19. Guide block. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] See Figures 1-5 This utility model provides the following three technical solutions: First embodiment: An injection mold system with a front mold auxiliary ejection mechanism, including a bracket 1 and a rear mold plate 4. The rear mold plate 4 is fixed in one place by screw holes. An electric push rod 2 powered and controlled by existing technology is provided on the bracket 1. The output end of the electric push rod 2 is connected to the front mold 3. The rear mold plate 4 is provided with a rear mold 5. The front mold 3 and the rear mold 5 are closed. Then, the material is injected through the flow channel on the rear mold 5 to form the product. The bottom of the cavity of the front mold 3 is uniformly slidably penetrated by an ejector rod 6. The bottom of the ejector rod 6 is provided with an inverted L-shaped connecting rod 7. The top of the connecting rod 7 is provided with a spring 8 connected to the front mold 3. The support 1 is equipped with two baffles 9, which are respectively positioned above the horizontal ends of the connecting rods 7 on both sides. The baffles 9 have a U-shaped structure. Limiting frames 10 are provided on both sides of the bottom of the front mold 3. The limiting frames 10 on both sides contact the lower horizontal ends of the connecting rods 7 on both sides. The limiting frames 10 move with the front mold 3. When the mold is closed, the horizontal ends of the connecting rods 7 contact the baffles 9. Thus, when the mold is closed, the connecting rods 7 are fixed by the limiting frames 10 and the baffles 9, and the ejector rod 6 is also fixed. When the mold is opened, the vertical ends of the connecting rods 7 are blocked first, so that the connecting rods 7 are compressed and the spring 8 is compressed, causing the ejector rod 6 to eject the product. This can avoid product defects and eliminate the need for manual fixing of the ejector rod 6. This injection mold system is ingeniously designed, simple in structure, and easy to maintain.

[0017] To prevent excessive wear at the bottom of the vertical end of the connecting rod 7, a buffer pad 11 is attached to the bottom of the vertical end of the connecting rod 7. The rubber buffer pad 11 can improve the wear resistance of the connecting rod 7 and buffer the impact force when the bottom of the vertical end of the connecting rod 7 is obstructed, thereby avoiding excessive ejection force of the ejector rod 6 at one moment, which could cause product damage.

[0018] The bracket 1 includes a connecting plate 15, which is fixed in one place by screw holes. Mounting plates 16 are detachably connected to both sides of the top of the connecting plate 15. The top of both mounting plates 16 is detachably connected to the fixing plate 17. Both side baffles 9 are detachably connected to the fixing plate 17. The electric push rod 2 is detachably connected to the connecting plate 15. The mounting plates 16 on both sides create a space between the fixing plate 17 and the connecting plate 15 to facilitate the installation of the electric push rod 2.

[0019] The top four sides of the fixed plate 17 are provided with guide pillars 18 that connect to the rear template 4, and the four sides of the front mold 3 are provided with guide blocks 19 that slide and fit on the guide pillars 18. When the front mold 3 is closed and opened, its guide blocks 19 are guided by the guide pillars 18, which can improve stability. Figure 5 The baffle 9 is located between the front and rear guide blocks 19, so that the front mold 3 will not be obstructed by the baffle 9 when it moves the guide blocks 19.

[0020] The second embodiment differs from the first embodiment in that: two through slots 14 are provided on the fixing plate 17, and the two through slots 14 are respectively opposite to the two limiting frames 10. After the front mold 3 is opened, the limiting frames 10 can be prevented from being obstructed by the through slots 14.

[0021] The third implementation differs from the second implementation in that a screw lifting mechanism 12 is provided on the fixed plate 17, and the screw lifting mechanism 12 is used to lift the baffle 13. The baffle 13 is located directly below the buffer pad 11, and the output end of the electric push rod 2 passes through the fixed plate 17 and through the baffle 13. The vertical end of the connecting rod 7 is blocked by the baffle 13. The screw lifting mechanism 12 is used to adjust the height of the baffle 13, so that when the connecting rod 7 is blocked by the baffle 13 can be adjusted. This allows the retraction stroke of the electric push rod 2 to be adjusted, so that after the mold is opened, the product can be removed without affecting the product removal, and the connecting rod 7 can be blocked in advance to achieve the product ejection. This shortens the retraction stroke of the electric push rod 2, improves the removal efficiency, and reduces costs.

[0022] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0023] In use, the electric push rod 2 drives the front mold 3 and the rear mold 5 to close. When the mold is closed, the bottom of the horizontal end of the connecting rod 7 contacts the limit frame 10 and the top contacts the baffle 9, which can fix the connecting rod 7 and the ejector rod 6. When the mold is opened, the front mold 3 moves down, so that the limit frame 10 and the connecting rod 7 also move down. When the buffer pad 11 at the vertical end of the connecting rod 7 contacts the baffle frame 13, the product can be ejected by the ejector rod 6. The gap between the front mold 3 and the rear mold 5 after the product is ejected is sufficient to allow space for the product to be removed.

[0024] It should be noted that, in this document, 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 any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An injection mold system with a front mold auxiliary ejection mechanism, comprising a support (1) and a rear mold platen (4), characterized in that: An electric push rod (2) is provided on the bracket (1). The output end of the electric push rod (2) is connected to the front mold (3). A rear mold (5) is provided on the rear mold plate (4). An ejector rod (6) slides through the bottom of the cavity of the front mold (3). An inverted L-shaped connecting rod (7) is provided at the bottom of the ejector rod (6). A spring (8) connected to the front mold (3) is provided at the top of the connecting rod (7). The bracket (1) is provided with two baffles (9), which are respectively opposite to the upper horizontal ends of the connecting rods (7) on both sides. The bottom sides of the front mold (3) are provided with limit frames (10), which are respectively in contact with the lower horizontal ends of the connecting rods (7) on both sides.

2. The injection mold system with a front mold auxiliary ejection mechanism according to claim 1, characterized in that: A buffer pad (11) is glued to the bottom of the vertical end of the connecting rod (7).

3. The injection mold system with a front mold auxiliary ejection mechanism according to claim 2, characterized in that: The bracket (1) includes a connecting plate (15), and mounting plates (16) are detachably connected to both sides of the top of the connecting plate (15). The top of both mounting plates (16) is detachably connected to a fixing plate (17). Both side baffles (9) are detachably connected to the fixing plate (17). The electric push rod (2) is detachably connected to the connecting plate (15).

4. The injection mold system with a front mold auxiliary ejection mechanism according to claim 3, characterized in that: The top four sides of the fixed plate (17) are provided with guide posts (18) that are connected to the rear template (4), and the four sides of the front mold (3) are provided with guide blocks (19) that are slidably sleeved on the guide posts (18). The baffle (9) is located between the front and rear guide blocks (19).

5. The injection mold system with a front mold auxiliary ejection mechanism according to claim 3, characterized in that: The fixing plate (17) has two through slots (14), which are respectively opposite to the two limit frames (10).

6. The injection mold system with a front mold auxiliary ejection mechanism according to claim 3, characterized in that: The fixed plate (17) is provided with a screw lifting mechanism (12), and the screw lifting mechanism (12) is used to lift the baffle (13). The baffle (13) is located directly below the buffer pad (11), and the output end of the electric push rod (2) passes through the fixed plate (17) and through the baffle (13).

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