Mould with movable and fixed mould ejection structure

Abstract

The utility model relates to a movable and fixed mold ejection structure mold, and belongs to the technical field of plastic processing, the movable and fixed mold ejection structure mold comprises a fixed mold, a first ejection plate, multiple first ejector pins, a movable mold, a second ejection plate and second ejector pins, the first ejection plate is slidably arranged on the fixed mold, the first ejector pins are arranged on the first ejection plate, and the multiple first ejector pins are slidably arranged on the side, close to the movable mold, of the fixed mold in a penetrating mode; the second ejector plates are arranged on the movable mold in a sliding mode, the multiple second ejector pins are arranged on the second ejector plates, and the multiple second ejector plates are arranged on the side, close to the fixed mold, of the movable mold in a sliding and penetrating mode. In the demolding process, the first ejector plate is driven to drive the multiple first ejector pins to move in the direction close to the movable mold, the product is separated from the fixed mold, the formed product is ejected to the movable mold, demolding between the product and the fixed mold is achieved firstly, then the second ejector plate is driven to drive the multiple second ejector pins to eject the product out of the movable mold, and demolding of the product can be achieved; the product is prevented from being pulled when the fixed mold and the movable mold are separated, and the forming quality of the injection product is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of plastic processing technology, and in particular to a movable and fixed mold ejection structure mold. Background Art

[0002] Moulds are tools used in the plastic processing industry to match plastic molding machines and give plastic products complete shapes and precise dimensions. Plastic pallets are basically manufactured by injection molding, and the moulds produced mainly include fixed moulds and movable moulds.

[0003] At present, after the plastic pallet is injection molded in the mold, the movable mold is usually opened and the fixed mold remains stationary, and the molded plastic part is ejected through the ejector structure on the movable mold. There is a problem with this mold, that is, when the fixed mold and the movable mold are separated, the plastic part is easily deformed due to pulling. The current solution is to spray a release agent on the mold, but it is still difficult to avoid the impact on product molding. Utility Model Content

[0004] In order to improve the molding quality of injection molded products, the present application provides a movable fixed mold ejection structure mold.

[0005] The present application provides a movable fixed mold ejection structure mold adopts the following technical solution:

[0006] A movable fixed mold ejection structure mold comprises a fixed mold, a first ejector plate, a first ejector pin, a movable mold, a second ejector plate and a second ejector pin, wherein the first ejector plate is slidably arranged on the fixed mold, a plurality of the first ejectors are arranged on the first ejector plate, and the plurality of the first ejectors are slidably penetrated on a side of the fixed mold close to the movable mold; the second ejector plate is slidably arranged on the movable mold, a plurality of the second ejectors are arranged on the second ejector plate, and the plurality of the second ejectors are slidably penetrated on a side of the movable mold close to the fixed mold.

[0007] By adopting the above technical scheme, the staff first drives the first ejector plate to drive the multiple first ejectors to slide in the direction away from the movable mold, so that the multiple first ejectors are retracted into the fixed mold, and drives the second ejector plate to drive the multiple second ejectors to slide in the direction away from the fixed mold, so that the multiple second ejectors are retracted into the movable mold, and then drives the movable mold to close the mold on the fixed mold, and injection molds the product between the fixed mold and the movable mold, and then drives the movable mold away from the fixed mold for demolding. During the demolding process, the first ejector plate is first driven to drive the multiple first ejectors to move in the direction close to the movable mold to separate the product from the fixed mold, and the molded product is pushed onto the movable mold, first realizing the demolding between the product and the fixed mold, and then driving the second ejector plate to drive the multiple second ejectors to eject the product from the movable mold, so as to realize the demolding of the product, avoid pulling the product when the fixed mold and the movable mold are separated, and effectively improve the molding quality of the injection molded product.

[0008] Optionally, a lever is slidably provided on the movable mold, a first spring is provided on the fixed mold, the first spring is connected to a side of the first ejector plate away from the first ejector pin; a linkage rod is provided on the first ejector plate, a guide surface for driving the lever to slide is provided on the linkage rod, and an arc-shaped groove for the lever to be inserted into is provided on the linkage rod; an elastic member for positioning the lever in the arc-shaped groove is provided on the movable mold.

[0009] By adopting the above technical solution, when the movable mold moves in the direction close to the fixed mold, the guide surface on the linkage rod drives the lever to slide, so that the lever and the linkage rod are staggered. As the movable mold continues to move in the direction close to the fixed mold, the movable mold drives the lever to move until the lever is aligned with the arc-shaped slot. At this time, the elastic member positions the lever in the arc-shaped slot, and then the movable mold continues to move to the mold closing state. During the process, since the lever is positioned in the arc-shaped slot, the movable mold drives the linkage rod to move, so that the first ejector plate retreats relative to the fixed mold, the first spring is compressed, and the first ejector plate can drive the multiple first ejectors to retract to the fixed mold. After the injection molding is completed, the movable mold moves away from the fixed mold. When the fixed mold moves in the direction of the first spring, the first spring is extended, so that the first ejector plate drives the multiple first ejectors to push the product on the fixed mold open, and push the molded product onto the movable mold, until the first ejector plate slides on the fixed mold to abut against the inner side wall close to the movable mold, and the movable mold still moves in the direction away from the fixed mold, so that the shift rod slides out of the arc-shaped slot, the positioning of the shift rod on the linkage rod is released, and the shift rod and the linkage rod are reset, so that the process of retracting the multiple first ejectors into the fixed mold and pushing the products away by the multiple first ejectors can be automatically performed, eliminating the need for an additional driving source to drive the first ejector plate to drive the multiple first ejectors to move, thereby effectively saving production costs.

[0010] Optionally, a linkage seat is provided on the movable mold, a waist hole is opened on the linkage seat, the shifting rod is slidably arranged on the linkage seat, and the shifting rod is located in the waist hole.

[0011] By adopting the above technical solution, when the lever slides on the linkage seat, the side wall of the waist hole guides the sliding of the lever, thereby effectively improving the stability of the lever when sliding.

[0012] Optionally, the elastic member includes a second spring, the second spring is arranged on the linkage seat, the second spring is connected to the shift rod, and the second spring always has a tendency to drive the shift rod to slide in a direction close to the linkage rod.

[0013] By adopting the above technical solution, when the movable mold moves to make the lever align with the arc-shaped slot, the second spring drives the lever to slide in the direction close to the linkage rod, so that the lever can be driven to be positioned in the arc-shaped slot, making it convenient for the staff to drive the lever to be positioned in the arc-shaped slot.

[0014] Optionally, a guide rod is provided on the fixed mold, and a notch is formed on the guide rod. The side wall of the notch and the linkage rod together form a guide channel for the shifting rod to move into the arc-shaped slot.

[0015] By adopting the above technical solution, during the process of the movable mold moving toward the fixed mold, the lever first abuts against the side wall of the notch on the guide rod. As the movable mold drives the lever to continue to move toward the fixed mold, the lever can slide into the guide channel formed by the side wall of the notch and the linkage rod, and then move from the guide channel to the arc-shaped slot. The guide channel guides the movement of the lever, effectively improving the stability of the lever in the process of moving into the arc-shaped slot.

[0016] Optionally, a guide frame is provided on the fixed mold, and the linkage rod is slidably inserted into the guide frame.

[0017] By adopting the above technical solution, the inner wall of the guide frame guides the movement of the linkage rod, effectively improving the stability of the linkage rod during the movement.

[0018] Optionally, a sliding rod is provided on the fixed mold, and the first top plate is slidably disposed on the sliding rod.

[0019] By adopting the above technical solution, the sliding rod guides the movement of the first top plate, effectively improving the stability of the first top plate when sliding in the fixed mold.

[0020] Optionally, a positioning column is provided on the fixed mold, and a positioning hole for inserting the positioning column is opened on the movable mold.

[0021] By adopting the above technical solution, when the movable mold moves toward the fixed mold for mold closing, the positioning column is inserted into the positioning hole, and the side wall of the positioning hole guides the movement of the positioning column, thereby effectively improving the accuracy of closing the fixed mold onto the movable mold.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. During the demoulding process, the first ejector plate is first driven to drive multiple first ejectors to move toward the movable mold to separate the product from the fixed mold, and the molded product is pushed onto the movable mold to first realize the demoulding between the product and the fixed mold, and then the second ejector plate is driven to drive multiple second ejectors to eject the product from the movable mold to realize the demoulding of the product, avoiding pulling of the product when the fixed mold and the movable mold are separated, and effectively improving the molding quality of the injection molded product;

[0024] 2. The process of retracting the multiple first ejectors to the fixed mold and ejecting the product by the multiple first ejectors can be performed automatically, eliminating the need for an additional driving source to drive the first ejector plate to drive the multiple first ejectors to move, effectively saving production costs;

[0025] 3. The lever slides into the notch, and then moves into the arc-shaped slot from the guide channel formed by the side wall of the notch and the linkage rod, effectively improving the stability of the lever in the process of moving into the arc-shaped slot. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the movable and fixed mold ejection structure mold in an embodiment of the present application.

[0027] Figure 2 It is a structural schematic diagram of the fixed mold of an embodiment of the present application.

[0028] Figure 3 It is a partial cross-sectional view of the linkage seat of the embodiment of the present application.

[0029] Figure 4 It is a partial structural schematic diagram of the fixed mold to movable mold state of the embodiment of the present application (the linkage seat is partially cut away in the figure).

[0030] Figure numerals: 1, fixed mold; 2, first ejector plate; 3, first ejector pin; 4, movable mold; 41, positioning hole; 5, second ejector plate; 6, second ejector pin; 7, lever; 8, first spring; 9, linkage rod; 91, guide surface; 92, arc-shaped slot; 10, elastic member; 101, second spring; 11, linkage seat; 111, waist hole; 12, guide rod; 121, notch; 13, guide frame; 14, sliding rod; 15, positioning column. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-4 This application is described in further detail.

[0032] The embodiment of the present application discloses a movable and fixed mold ejection structure mold.

[0033] Reference Figure 1 , Figure 2 The movable fixed mold ejection structure mold includes a fixed mold 1, a first ejector plate 2, a first ejector pin 3, a movable mold 4, a second ejector plate 5, a second ejector pin 6, a lever 7 and a linkage rod 9.

[0034] Reference Figure 1 , Figure 2In this embodiment, the fixed mold 1 and the movable mold 4 are both arranged with internal openings, the first ejector plate 2 is slidably mounted on the inner side wall of the opening of the fixed mold 1, a plurality of first ejector pins 3 are mounted on the side of the first ejector plate 2 close to the movable mold 4, the plurality of first ejector pins 3 are slidably penetrated on the side wall of the fixed mold 1 at one end close to the movable mold 4, and the plurality of first ejector pins 3 can be penetrated to the outer side of the fixed mold 1 close to the movable mold 4; the second ejector plate 5 is slidably mounted on the inner side wall of the opening of the movable mold 4, a plurality of second ejector pins 6 are mounted on the side of the second ejector plate 5 close to the fixed mold 1, the plurality of second ejector pins 6 are slidably penetrated on the side wall of the movable mold 4 at one end close to the fixed mold 1, and the plurality of second ejector pins 6 can be penetrated to the outer side of the movable mold 4 close to the fixed mold 1.

[0035] Reference Figure 1 A positioning column 15 is installed on the side wall of the fixed mold 1 facing the movable mold 4. In the present embodiment, a plurality of positioning columns 15 are installed on the fixed mold 1. A plurality of positioning holes 41 are opened on the side of the movable mold 4 facing the fixed mold 1, and one positioning hole 41 is directly opposite to one positioning column 15. When the movable mold 4 moves toward the direction close to the fixed mold 1, the plurality of positioning columns 15 can be respectively inserted into one positioning hole 41, and the side walls of the positioning holes 41 guide the movement of the positioning columns 15, thereby improving the stability of the movement of the positioning columns 15, thereby improving the stability and accuracy of the movable mold 4 being clamped on the fixed mold 1, and improving the quality of the product after subsequent injection molding.

[0036] Reference Figure 2 A sliding rod 14 is installed on the inner side wall of the fixed mold 1 in the direction toward the movable mold 4, and the sliding rod 14 is slidably penetrated on the first top plate 2. In the present embodiment, a plurality of sliding rods 14 are installed on the inner side wall of the fixed mold 1; when the first top plate 2 slides on the inner side wall of the fixed mold 1, the plurality of sliding rods 14 guide the sliding of the first top plate 2, so that the first top plate 2 can only move along the length direction of the sliding rod 14, thereby improving the stability of the first top plate 2 when sliding in the fixed mold 1; and in the present embodiment, a plurality of guide rods are installed on the inner side wall of the movable mold 4, and the plurality of guide rods are all slidably penetrated on the second top plate 5, so that when the second top plate 5 slides in the movable mold 4, the plurality of guide rods can improve the stability of the second top plate 5 when sliding.

[0037] Reference Figure 1 , Figure 3 A linkage seat 11 is installed on the movable mold 4, and a lever 7 is slidably installed on the linkage seat 11. The sliding direction of the lever 7 is perpendicular to the moving direction of the movable mold 4, and a waist hole 111 is opened on the linkage seat 11. In this embodiment, a through hole is opened in the middle of the linkage seat 11, and a waist hole 111 is opened on the upper and lower side walls of the through hole. The length direction of the waist hole 111 extends in a direction perpendicular to the moving direction of the movable mold 4. The two ends of the lever 7 slide in the two waist holes 111 respectively, so as to improve the stability of the lever 7 when sliding.

[0038] Reference Figure 2 A plurality of first springs 8 are installed on the inner side wall of the fixed mold 1 away from the movable mold 4. The plurality of first springs 8 are all connected to the first top plate 2. The plurality of first springs 8 always have a tendency to drive the first top plate 2 to move toward the movable mold 4. In this embodiment, the first springs 8 are sleeved on the outer periphery of the sliding rod 14, so that the sliding rod 14 can support the first spring 8 when the first spring 8 is extended and retracted, thereby improving the stability of the first spring 8 when it is extended and retracted.

[0039] Reference Figure 2 , Figure 4 A linkage rod 9 is installed on the first top plate 2, and the linkage rod 9 extends in the direction toward the movable mold 4. A guide surface 91 is provided at one end of the linkage rod 9 facing the movable mold 4 and close to the lever 7. The guide surface 91 is gradually inclined from the end of the linkage rod 9 close to the movable mold 4 to the end of the linkage rod 9 close to the fixed mold 1, so that when the linkage rod 9 abuts against the lever 7, the guide surface 91 can drive the lever 7 to slide to be offset from the linkage rod 9; an arc-shaped groove 92 is provided on the side wall of the linkage rod 9 on the side where the guide surface 91 drives the lever 7 to be offset, and the arc-shaped groove 92 is adapted to the lever 7 so that the lever 7 can be inserted.

[0040] Reference Figure 3 , Figure 4 An elastic member 10 is installed on the linkage seat 11. The elastic member 10 is used to position the lever 7 in the arc-shaped slot 92. The elastic member 10 includes a second spring 101. In this embodiment, two second springs 101 are installed on the linkage seat 11. The two second springs 101 are respectively connected to the upper and lower ends of the lever 7. The two second springs 101 always have a tendency to drive the lever 7 to slide in a direction close to the linkage rod 9.

[0041] Reference Figure 2 , Figure 4 A guide rod 12 is installed on the fixed mold 1. A notch 121 is opened on the side of the guide rod 12 away from the fixed mold 1 and close to the linkage rod 9. A guide channel is formed between the side wall of the notch 121 and the side wall of the linkage rod 9. When the lever 7 passes through the guide channel, the guide channel gradually guides the lever 7 into the arc-shaped slot 92.

[0042] Reference Figure 2 , Figure 4 A guide frame 13 is installed on the fixed mold 1, and the interior of the guide frame 13 is hollow. In this embodiment, the guide rod 12 is fixed on the inner wall of the guide frame 13, and a guide hole adapted to the linkage rod 9 is formed between the guide rod 12 and the inner wall of the guide frame 13. The linkage rod 9 is slidably penetrated in the guide hole, and the inner wall of the guide frame 13 guides the movement of the linkage rod 9, thereby effectively improving the stability of the linkage rod 9 when moving.

[0043] In this embodiment, a group of linkage seats 11, levers 7, and second springs 101 are installed on the side walls of the upper and lower sides of the movable mold 4 near the corners, and a linkage rod 9 is installed on the side walls of the upper and lower sides of the first top plate 2 near the corners, and a group of guide rods 12 and guide frames 13 are also installed on the side walls of the upper and lower sides of the fixed mold 1 near the corners. A group of linkage seats 11, levers 7, and second springs 101 in corresponding positions correspond to the linkage rods 9 and the guide rods 12 and guide frames 13, so that the position restriction of the first top plate 2 during the mold closing and product demolding of the fixed mold 1 and the movable mold 4 is more stable.

[0044] The implementation principle of a movable fixed mold ejection structure mold in the embodiment of the present application is as follows: the staff installs the fixed mold 1 and the movable mold 4 on the plastic molding machine, and connects multiple driving sources to the movable mold 4, the second ejector plate 5 and other devices respectively, and connects the injection channel to the mold. When producing plastic products, the staff drives the movable mold 4 to close the mold to the fixed mold 1. In the process of the movable mold 4 moving toward the fixed mold 1, the movable mold 4 drives the lever 7 to move. When the lever 7 moves to abut against the side wall of the notch 121, the side wall of the notch 121 guides the lever 7 to the side wall of the guide surface 91 on the linkage rod 9, and then as the movable mold 4 continues to move, the guide surface 91 drives the lever 7 to slide to the side wall of the notch 121 on the guide rod 12 and the linkage rod 9, and then the lever 7 enters the arc-shaped slot 92 from the guide channel. At this time, the second spring 101 drives the lever 7 to move in the direction close to the linkage rod 9, thereby positioning the lever 7 in the arc-shaped slot 92, and then the movable mold 4 continues to move to close the fixed mold 1. Under the positioning action of the lever 7, the linkage rod 9 remains stationary relative to the movable mold 4, thereby making the first ejector plate 2 remain stationary relative to the movable mold 4. The first ejector plate 2 moves to the inner side wall of the fixed mold 1 away from the movable mold 4, and the first ejector plate 2 can drive the multiple first ejector pins 3 to retract the fixed mold 1, and then the staff drives the second ejector plate 5 to drive the multiple second ejector pins 6 to retract the movable mold 4, and then the staff performs injection molding. After the injection molding is completed, the staff The movable mold 4 is driven to move in a direction away from the fixed mold 1. In the initial stage when the movable mold 4 moves away from the fixed mold 1, since the lever 7 is positioned in the arc-shaped slot 92, the linkage rod 9 is positioned by the lever 7, so that the movable mold 4 drives the linkage rod 9 to move together, and then the first ejector plate 2 drives the plurality of first ejector pins 3 to push onto the molded product. As the movable mold 4 continues to retreat, the plurality of first ejector pins 3 can push the molded product away, so that the molded product is separated from the fixed mold 1, and the molded product is fixed on the movable mold 4. Then the movable mold 4 continues to retreat until the first ejector plate 2 slides in the fixed mold 1 to abut against the inner side wall of the fixed mold 1 close to the movable mold 4. As the movable mold 4 further retreats, the movable mold 4 drives the lever 7 to continue to move in a direction away from the fixed mold 1. That is, The lever 7 can be moved out of the arc-shaped slot 92 to release the positioning of the lever 7 on the linkage rod 9, and the lever 7 is reset on the linkage seat 11, and the linkage rod 9 and the first ejector plate 2 are reset on the fixed mold 1. Then the staff drives the second ejector plate 5 to drive the plurality of second ejectors 6 to separate the molded product from the movable mold 4, completing the production and demoulding of the product, avoiding pulling of the molded product when the fixed mold 1 and the movable mold 4 are separated, and effectively improving the molding quality of the injection molded product. In addition, during the production process, the process of retracting the plurality of first ejectors 3 into the fixed mold 1 and ejecting the product by the plurality of first ejectors 3 can be automatically performed, eliminating the need for an additional driving source to drive the first ejector plate 2 to drive the plurality of first ejectors 3 to move, thereby effectively saving production costs.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A movable and fixed mold ejection structure mold, characterized in that: The invention comprises a fixed mold (1), a first ejector plate (2), a first ejector pin (3), a movable mold (4), a second ejector plate (5) and a second ejector pin (6), wherein the first ejector plate (2) is slidably arranged on the fixed mold (1), a plurality of the first ejector pins (3) are arranged on the first ejector plate (2), and the plurality of the first ejector pins (3) are slidably arranged on a side of the fixed mold (1) close to the movable mold (4); the second ejector plate (5) is slidably arranged on the movable mold (4), a plurality of the second ejector pins (6) are arranged on the second ejector plate (5), and the plurality of the second ejector plates (5) are slidably arranged on a side of the movable mold (4) close to the fixed mold (1).

2. The movable and fixed mold ejection structure mold according to claim 1, characterized in that: A lever (7) is slidably provided on the movable mold (4), a first spring (8) is provided on the fixed mold (1), and the first spring (8) is connected to a side of the first ejector plate (2) away from the first ejector pin (3); a linkage rod (9) is provided on the first ejector plate (2), the linkage rod (9) is provided with a guide surface (91) for driving the lever (7) to slide, and the linkage rod (9) is provided with an arc-shaped groove (92) for the lever (7) to be inserted into; and an elastic member (10) is provided on the movable mold (4) for positioning the lever (7) in the arc-shaped groove (92).

3. The movable and fixed mold ejection structure mold according to claim 2, characterized in that: The movable mold (4) is provided with a linkage seat (11), the linkage seat (11) is provided with a waist hole (111), the shifting rod (7) is slidably arranged on the linkage seat (11), and the shifting rod (7) is located in the waist hole (111).

4. The movable and fixed mold ejection structure mold according to claim 3, characterized in that: The elastic member (10) comprises a second spring (101), the second spring (101) being arranged on the linkage seat (11), the second spring (101) being connected to the shifting rod (7), and the second spring (101) always having a tendency to drive the shifting rod (7) to slide in a direction close to the linkage rod (9).

5. The movable and fixed mold ejection structure mold according to claim 2, characterized in that: A guide rod (12) is provided on the fixed mold (1), and a notch (121) is formed on the guide rod (12). The side wall of the notch (121) and the linkage rod (9) together form a guide channel for the shifting rod (7) to move into the arc-shaped slot (92).

6. The movable and fixed mold ejection structure mold according to claim 2, characterized in that: A guide frame (13) is provided on the fixed die (1), and the linkage rod (9) is slidably arranged on the guide frame (13).

7. The movable and fixed mold ejection structure mold according to claim 1, characterized in that: The fixed mold (1) is provided with a sliding rod (14), and the first top plate (2) is slidably arranged on the sliding rod (14).

8. The movable and fixed mold ejection structure mold according to claim 1, characterized in that: The fixed mold (1) is provided with a positioning column (15), and the movable mold (4) is provided with a positioning hole (41) for inserting the positioning column (15).

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