Bidirectional ejection demolding device

Abstract

The utility model discloses a bidirectional ejection demolding device, which comprises a main body assembly, an ejection mechanism and a demolding mechanism, wherein the main body assembly comprises a movable mold, a U-shaped fixed plate and a movable plate; the U-shaped fixed plate is fixed to the side edge of the movable mold, and the movable plate is movably connected to the inner side of the U-shaped fixed plate. The auxiliary demolding assembly comprises a stepped hole, a first supporting frame, a second supporting frame, a connecting plate, an open hole and a T-shaped stop block; the stepped holes are formed in the two symmetrical side edges of the movable mold, the T-shaped check blocks are inserted into the stepped holes, the open holes are formed in the two symmetrical side edges of the U-shaped fixing plate, the first supporting frames are fixed to the two symmetrical side edges of the movable plate, the second supporting frames are fixed to the middles of the side edges of the T-shaped check blocks, and the connecting plate is rotationally connected between the first supporting frames and the second supporting frames. The utility model discloses a bidirectional ejection demolding device, and aims to solve the problems that an existing bidirectional ejection demolding device can only perform demolding on one plane, but an injection product is attached to the inner side wall of a movable mold and is directly demolded, so that the outer side wall of the injection product is scratched, and the demolding difficulty is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of mold demoulding, in particular to a bidirectional ejection demoulding device. Background Art

[0002] A bidirectional ejector is a device used in injection molding to improve production efficiency and product quality, particularly in high-volume production. It utilizes two ejector systems—one located in the fixed mold (upper die) and one in the movable mold (lower die)—to simultaneously eject the plastic part from both sides. During demolding, the fixed mold ejects the part, which then exits the movable mold. The part then exits the fixed mold and is ejected from the movable mold by the ejector mechanism.

[0003] The existing two-way ejection demoulding device can only demould on one plane. The injection molded product adheres to the inner wall of the movable mold. Direct demoulding will cause scratches on the outer wall of the injection molded product, increasing the difficulty of demoulding. Therefore, a two-way ejection demoulding device is needed to further facilitate demoulding and reduce scratches on the side walls of the product. Utility Model Content

[0004] The purpose of the present utility model is to provide a two-way ejection demoulding device to solve the problem raised in the above background technology that the existing two-way ejection demoulding device can only demould on one plane, and the injection molded product is attached to the inner wall of the movable mold. Direct demoulding will cause scratches on the outer wall of the injection molded product, increasing the difficulty of demoulding.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The utility model is a two-way ejection demoulding device, comprising:

[0007] A main body assembly, comprising a movable mold, a U-shaped fixed plate and a movable plate;

[0008] The U-shaped fixed plate is fixed to the side of the movable mold, and the movable plate is movably connected to the inner side of the U-shaped fixed plate;

[0009] An auxiliary demoulding assembly, the auxiliary demoulding assembly comprising a stepped hole, a first support frame, a second support frame, a connecting plate, an opening and a T-shaped stopper;

[0010] The step holes are opened on two symmetrical sides of the movable mold, the T-shaped stopper is inserted into the step holes, the openings are opened on two symmetrical sides of the U-shaped fixed plate, the first support frame is fixed on two symmetrical sides of the movable plate, the second support frame is fixed on the middle part of the side of the T-shaped stopper, and the connecting plate is rotatably connected between the first support frame and the second support frame.

[0011] Furthermore, the main body assembly also includes a fixed mold and a support plate;

[0012] The fixed mold is matched with the movable mold, and the support plate is fixed at the middle part of one end of the fixed mold away from the movable mold.

[0013] Furthermore, the main body assembly further includes an ejection hole and an injection hole;

[0014] The ejection holes are respectively opened on the fixed mold and the movable mold and are symmetrically distributed, and the injection hole is opened in the middle of the fixed mold.

[0015] Furthermore, the main body assembly also includes an electric push rod and an ejector pin;

[0016] There are two electric push rods, which are respectively fixed on the support plate and the middle of the U-shaped fixed plate. There are two movable plates, which are fixed on the movable ends of the electric push rods. One end of the ejector is fixed on the side of the movable plate away from the electric push rod and is movably connected in the ejection hole.

[0017] Furthermore, it also includes an auxiliary reset component;

[0018] The auxiliary reset assembly includes a limit plate, a through hole and a spring;

[0019] The limit plate is fixed on the outside of the step hole and is located outside the movable mold. The through hole is opened in the middle of the limit plate. One end of the spring is fixed on the limit plate, and the other end is fixed on the T-shaped stopper.

[0020] Furthermore, the first support frame is movably connected in the opening, and the second support frame is movably connected in the through hole.

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] 1. The utility model provides an auxiliary demoulding assembly. When the movable mold is separated from the fixed mold, the electric push rod on the U-shaped fixed plate is started and extended, driving the movable plate to approach the movable mold, driving the ejector pin to eject the product out of the movable mold. When the movable plate moves, it drives the first support frame to move in the opening, drives the connecting plate to move and rotate, and then drives the second support frame to move outward along the step hole, driving the T-shaped stopper to separate from the inner wall of the movable mold. This arrangement can reduce the contact area between the inner wall of the movable mold and the product during demoulding, thereby facilitating demoulding.

[0023] 2. The utility model provides an auxiliary reset component. After the demoulding is completed, the electric push rod contracts, driving the movable plate to return to its original position, and then driving the second support frame to move along the through hole on the limit plate into the step hole, driving the T-shaped stopper to move and fit into the step hole on the inner wall of the movable mold. At the same time, under the action of the spring, it fits tightly with the inner wall of the movable mold. This setting can avoid the T-shaped stopper from fitting loosely with the inner wall of the movable mold, affecting the product molding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model from a first perspective;

[0026] Figure 2 This is a schematic diagram of the overall structure of the utility model from a second perspective;

[0027] Figure 3 This is a schematic diagram of the fixed mold and movable mold structure of the utility model;

[0028] Figure 4 This is a schematic diagram of the movable plate and ejector pin of the utility model;

[0029] Figure 5 This is a schematic structural diagram of the auxiliary reset component of the present utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0031] 10. Fixed mold; 11. Support plate; 12. Electric push rod; 13. Movable plate; 14. Ejector hole; 15. Ejector pin; 16. Injection hole; 17. Movable mold; 18. U-shaped fixed plate; 20. Step hole; 21. First support frame; 22. Second support frame; 23. Connecting plate; 24. Opening; 25. T-shaped stopper; 30. Limit plate; 31. Through hole; 32. Spring. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] In order to make the purpose, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0035] See also Figure 1-5As shown, this embodiment is a two-way ejection demoulding device, comprising:

[0036] The main body assembly includes a movable mold 17, a U-shaped fixed plate 18 and a movable plate 13;

[0037] The U-shaped fixed plate 18 is fixed to the side of the movable mold 17, and the movable plate 13 is movably connected to the inner side of the U-shaped fixed plate 18;

[0038] The movable mold 17 is used to assist in product molding, the U-shaped fixed plate 18 plays a supporting role, and the movable plate 13 plays a connecting role;

[0039] Auxiliary demoulding assembly, the auxiliary demoulding assembly includes a stepped hole 20, a first support frame 21, a second support frame 22, a connecting plate 23, an opening 24 and a T-shaped stopper 25;

[0040] The stepped holes 20 are provided on two symmetrical sides of the movable mold 17, the T-shaped stoppers 25 are inserted into the stepped holes 20, the openings 24 are provided on two symmetrical sides of the U-shaped fixed plate 18, the first support frames 21 are fixed on two symmetrical sides of the movable plate 13, the second support frames 22 are fixed in the middle of the sides of the T-shaped stoppers 25, and the connecting plate 23 is rotatably connected between the first support frames 21 and the second support frames 22;

[0041] The first support frame 21 is movably connected in the opening 24;

[0042] The stepped hole 20 provides a space for movement, the first support frame 21, the second support frame 22 and the connecting plate 23 play a connecting role, the opening 24 provides a space for movement, and the T-shaped stopper 25 plays a closing role;

[0043] The main assembly also includes a fixed mold 10 and a support plate 11;

[0044] The fixed mold 10 matches the movable mold 17, and the support plate 11 is fixed to the middle of the end of the fixed mold 10 away from the movable mold 17;

[0045] The fixed mold 10 assists in product molding, and the support plate 11 plays a supporting role;

[0046] The main assembly also includes an ejection hole 14 and an injection hole 16;

[0047] The ejection holes 14 are respectively opened on the fixed mold 10 and the movable mold 17 and are symmetrically distributed. The injection hole 16 is opened in the middle of the fixed mold 10.

[0048] The ejection hole 14 provides a movable space for the ejector pin 15, and the injection hole 16 is used to inject liquid into the mold;

[0049] The main assembly also includes an electric push rod 12 and an ejector pin 15;

[0050] There are two electric push rods 12, which are fixed to the support plate 11 and the middle of the U-shaped fixed plate 18 respectively. There are two movable plates 13, which are fixed to the movable ends of the electric push rods 12. One end of the ejector pin 15 is fixed to the side of the movable plate 13 away from the electric push rod 12, and is movably connected to the ejection hole 14.

[0051] The electric push rod 12 can realize position change, and the ejector pin 15 is used to eject the product.

[0052] Working principle:

[0053] During demoulding, as the movable mold 17 separates from the fixed mold 10, the electric push rod 12 on the support plate 11 starts, driving the movable plate 13 to move, driving the ejector 15 to eject the product from the fixed mold 10;

[0054] When the movable mold 17 is separated from the fixed mold 10, the electric push rod 12 on the U-shaped fixed plate 18 is started and extended, driving the movable plate 13 to approach the movable mold 17, and driving the ejector 15 to eject the product out of the movable mold 17. When the movable plate 13 moves, it drives the first support frame 21 to move in the opening 24, drives the connecting plate 23 to move and rotate, and then drives the second support frame 22 to move outward along the step hole 20, driving the T-shaped stopper 25 to separate from the inner wall of the movable mold 17.

[0055] This step can reduce the contact area between the inner wall of the movable mold 17 and the product during demoulding, thereby facilitating demoulding.

[0056] See also Figure 5 This embodiment is based on the above embodiment and further includes:

[0057] Auxiliary reset assembly, the auxiliary reset assembly includes a limit plate 30, a through hole 31 and a spring 32;

[0058] The limit plate 30 is fixed to the outside of the stepped hole 20 and is located outside the movable mold 17. The through hole 31 is opened in the middle of the limit plate 30. One end of the spring 32 is fixed to the limit plate 30 and the other end is fixed to the T-shaped stopper 25.

[0059] The second support frame 22 is movably connected in the through hole 31;

[0060] The limiting plate 30 plays a sealing role, the through hole 31 facilitates the movement of the second support frame 22, and the spring 32 has a squeezing function.

[0061] Working principle:

[0062] After demolding is completed, the electric push rod 12 contracts, driving the movable plate 13 to return to its original position, and then driving the second support frame 22 to move along the through hole 31 on the limit plate 30 into the stepped hole 20, driving the T-shaped stopper 25 to move to fit with the stepped hole 20 on the inner wall of the movable mold 17, and at the same time, under the action of the spring 32, it fits tightly with the inner wall of the movable mold 17.

[0063] This step can prevent the T-shaped stopper 25 from being loosely attached to the inner wall of the movable mold 17, thereby affecting the product molding effect.

[0064] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0065] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A two-way ejection demoulding device, characterized in that: include: A main body component, the main body component comprising a movable mold (17), a U-shaped fixed plate (18) and a movable plate (13); The U-shaped fixed plate (18) is fixed to the side of the movable mold (17), and the movable plate (13) is movably connected to the inner side of the U-shaped fixed plate (18); An auxiliary demoulding assembly, the auxiliary demoulding assembly comprising a stepped hole (20), a first support frame (21), a second support frame (22), a connecting plate (23), an opening (24) and a T-shaped stopper (25); The step hole (20) is opened on two symmetrical sides of the movable mold (17), the T-shaped stopper (25) is inserted into the step hole (20), the opening (24) is opened on two symmetrical sides of the U-shaped fixed plate (18), the first support frame (21) is fixed on two symmetrical sides of the movable plate (13), the second support frame (22) is fixed on the middle of the side of the T-shaped stopper (25), and the connecting plate (23) is rotatably connected between the first support frame (21) and the second support frame (22).

2. A bidirectional ejection demoulding device according to claim 1, characterized in that: The main body assembly further comprises a fixed mold (10) and a support plate (11); The fixed mold (10) matches the movable mold (17), and the support plate (11) is fixed to the middle of one end of the fixed mold (10) away from the movable mold (17).

3. A bidirectional ejection demoulding device according to claim 2, characterized in that: The main body component further includes an ejection hole (14) and an injection hole (16); The ejection holes (14) are respectively opened on the fixed mold (10) and the movable mold (17) and are symmetrically distributed. The injection hole (16) is opened in the middle of the fixed mold (10).

4. A bidirectional ejection demoulding device according to claim 2, characterized in that: The main body assembly further includes an electric push rod (12) and an ejector pin (15); There are two electric push rods (12), which are fixed to the middle of the support plate (11) and the U-shaped fixed plate (18), respectively. There are two movable plates (13), which are fixed to the movable ends of the electric push rods (12). One end of the ejector pin (15) is fixed to the side of the movable plate (13) away from the electric push rod (12) and is movably connected in the ejection hole (14).

5. The bidirectional ejection demoulding device according to claim 1, characterized in that: Also included is an auxiliary reset assembly; The auxiliary reset assembly includes a limit plate (30), a through hole (31) and a spring (32); The limit plate (30) is fixed on the outside of the step hole (20) and is located outside the movable mold (17). The through hole (31) is opened in the middle of the limit plate (30). One end of the spring (32) is fixed on the limit plate (30) and the other end is fixed on the T-shaped stopper (25).

6. A bidirectional ejection demoulding device according to claim 1, characterized in that: The first support frame (21) is movably connected in the opening (24), and the second support frame (22) is movably connected in the through hole (31).

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