Blowing mold capable of assisting demolding

Abstract

The utility model discloses a blow mold capable of assisting in demolding, which relates to the technical field of blow molds and comprises an upper mold and a forming cavity, a lower mold is arranged below the upper mold, the forming cavity and a positioning component are arranged between the upper mold and the lower mold, cooling channels are arranged in the upper mold and the lower mold, and the cooling channels are communicated with the forming cavity. Ejecting mechanisms are arranged in the middles, close to the forming cavity, of the upper die and the lower die. According to the blowing mold capable of assisting demolding, when an upper mold and a lower mold of the blowing mold are unfolded towards the two sides, a motor drives a cam to rotate and drives a protruding part of the cam to make contact with a rolling wheel, then the rolling wheel is extruded by the cam, and the rolling wheel drives an ejector rod to move towards one side and drives a reset spring to contract at the same time; and then the ejector rod drives the ejector plate to move into the forming cavity, so that the ejector plate pushes the middle of the plastic workpiece, the plastic workpiece can be prevented from being clamped in the blowing mold, rapid auxiliary demolding is facilitated, and the working efficiency of the blowing mold is improved.

Description

Technical Field

[0001] This utility model relates to the field of blow molding mold technology, specifically a blow molding mold that can assist in demolding. Background Technology

[0002] Plastic processing is the process of transforming plastic raw materials into various plastic products through various processing methods and processes. Plastic is a highly malleable material with diverse shapes and wide applications, therefore plastic processing occupies an important position in modern industrial production. In the plastic processing process, a blow molding die is used for shaping. The blow molding die is an important component of the blow molding process and is mainly used to produce various hollow plastic products, such as bottles, containers, and buckets.

[0003] However, existing blow molding molds have the following disadvantages: after the plastic workpiece is formed, the upper and lower molds of the blow molding mold will expand to both sides, so that the inner walls of the upper and lower molds are separated from the plastic workpiece. However, during the molding process of the plastic workpiece, due to incomplete cooling or other reasons, the two ends of the plastic workpiece may get stuck in the molding cavity, making it difficult to demold quickly. Therefore, the current blow molding molds need to be improved. Utility Model Content

[0004] The purpose of this utility model is to provide a blow molding die that can assist in demolding, so as to solve the problem mentioned in the background art that the inner cavity of the blow molding die on the market does not have a structure to assist in demolding. However, during the molding process of plastic workpieces, due to incomplete cooling or other reasons, the two ends of the plastic workpiece may get stuck in the molding cavity, making it difficult to demold quickly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a blow molding mold that can assist in demolding, including an upper mold and a molding cavity, a lower mold is provided below the upper mold, the molding cavity and a positioning component are disposed between the upper mold and the lower mold, cooling channels are provided inside the upper mold and the lower mold, and an ejector mechanism is provided in the middle of the upper mold and the lower mold near the molding cavity, the ejector mechanism includes a top plate, a return spring, a cam, a roller, an ejector rod and a motor, and a top plate is provided in the middle of the upper mold and the lower mold near the molding cavity.

[0006] Preferably, a push rod is connected to the side of the top plate away from the molding cavity, a return spring is sleeved on the outer side of the push rod, and a roller is connected to the end of the push rod away from the top plate through a movable shaft.

[0007] Preferably, a motor is provided in the built-in groove of both the upper and lower molds, and a cam is connected to the end of the motor near the bottom of the roller via a coupling.

[0008] Preferably, electric push rods are fixedly installed at both ends of the upper mold, and locking mechanisms are installed at both ends of the upper mold and the lower mold near the electric push rods.

[0009] Preferably, one end of the electric push rod is connected to the locking mechanism, and the upper and lower molds have blowholes on the side near the molding cavity.

[0010] Preferably, the locking mechanism includes a moving rod, a gear, a rotating shaft, a fixed block, a locking block, and a locking block, and one end of the electric push rod is connected to the moving rod.

[0011] Preferably, the upper mold is connected to two fixed blocks at both ends, a rotating shaft is mounted on the inner side of the fixed block via a bearing, and a locking block is fixedly sleeved on the outer side of the rotating shaft.

[0012] Preferably, a gear is fixedly connected to one end of the rotating shaft, and the gear is meshed with the moving rod. The lower mold has locking blocks fixed to both ends near the locking block.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Equipped with an ejector mechanism, as the upper and lower molds of the blow molding die unfold to both sides, the motor drives the cam to rotate, causing the protruding part of the cam to contact the roller. Subsequently, the roller is squeezed by the cam, and the roller drives the ejector rod to move to one side, while simultaneously causing the return spring to contract. Then, the ejector rod drives the ejector plate to move into the molding cavity, so that the ejector plate pushes the middle of the plastic workpiece. This can prevent the plastic workpiece from getting stuck in the blow molding die, facilitate quick demolding, and improve the working efficiency of the blow molding die.

[0015] 2. Equipped with a locking mechanism, after the positioning assembly is connected, the electric push rod is activated to move the moving rod to one side, causing the moving rod to mesh with the gear. The gear then causes the rotating shaft to rotate the locking block, so that one end of the locking block fits against the bottom end of the locking block. This allows for repositioning and connection between the upper and lower molds, improving the stability of the blow molding mold. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main cross-sectional structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the main cross-sectional structure of the top plate of this utility model;

[0019] Figure 4 This is a side sectional view of the top material mechanism of this utility model.

[0020] Figure 5This is a top view cross-sectional structural diagram of the lower mold of this utility model;

[0021] Figure 6 This is an enlarged structural diagram of point A in this utility model;

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of the gear of this utility model.

[0023] In the diagram: 1. Upper mold; 2. Lower mold; 3. Positioning assembly; 4. Cooling channel; 5. Electric push rod; 6. Ejection mechanism; 601. Top plate; 602. Return spring; 603. Cam; 604. Roller; 605. Ejector rod; 606. Motor; 7. Molding cavity; 8. Blowout; 9. Locking mechanism; 901. Moving rod; 902. Gear; 903. Rotating shaft; 904. Fixing block; 905. Locking block; 906. Clamping block. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-6 This utility model provides a technical solution: a blow molding mold that can assist in demolding, including an upper mold 1 and a molding cavity 7. A lower mold 2 is provided below the upper mold 1. The molding cavity 7 and the positioning component 3 are arranged between the upper mold 1 and the lower mold 2. Cooling channels 4 are provided inside the upper mold 1 and the lower mold 2. A blow hole 8 is opened on the side of the upper mold 1 and the lower mold 2 near the molding cavity 7.

[0026] Please see Figures 2-5 Both the upper mold 1 and the lower mold 2 are provided with a top ejector mechanism 6 near the middle of the forming cavity 7. The top ejector mechanism 6 includes a top plate 601, a return spring 602, a cam 603, a roller 604, a top rod 605, and a motor 606. Both the upper mold 1 and the lower mold 2 are provided with a top plate 601 near the middle of the forming cavity 7. The top plate 601 is connected to the top rod 605 on the side away from the forming cavity 7. The return spring 602 is sleeved on the outer side of the top rod 605. The end of the top rod 605 away from the top plate 601 is connected to the roller 604 through a movable shaft. Both the upper mold 1 and the lower mold 2 are provided with a motor 606 in their built-in grooves. The end of the motor 606 near the roller 604 is connected to the cam 603 through a coupling.

[0027] In practice, after the plastic workpiece is formed, the upper mold 1 and lower mold 2 of the blow molding mold will expand to both sides, causing the inner walls of the upper mold 1 and lower mold 2 to detach from the plastic workpiece. However, during the molding process of the plastic workpiece, due to incomplete cooling or other reasons, the two ends of the plastic workpiece may get stuck in the molding cavity 7, making it difficult to demold quickly. At the same time as the upper mold 1 and lower mold 2 of the blow molding mold expand to both sides, the motor 606 drives the cam 603 to rotate, causing the protruding part of the cam 603 to contact the roller 604. Subsequently, the roller 604 is squeezed by the cam 603, and the roller 604 drives the ejector rod 605 to move to one side, while driving the return spring 602 to retract. Then, the ejector rod 605 drives the top plate 601 to move into the molding cavity 7, so that the top plate 601 pushes the middle of the plastic workpiece, which can prevent the plastic workpiece from getting stuck in the blow molding mold, facilitate quick demolding, and improve the working efficiency of the blow molding mold.

[0028] Please see Figure 1 , Figure 2 and Figures 5-7 Electric push rods 5 are fixedly installed at both ends of the upper mold 1. Locking mechanisms 9 are installed at both ends of the upper mold 1 and the lower mold 2 near the electric push rods 5. One end of the electric push rod 5 is connected to the locking mechanism 9. The locking mechanism 9 includes a moving rod 901, a gear 902, a rotating shaft 903, a fixed block 904, a locking block 905, and a latching block 906. One end of the electric push rod 5 is connected to the moving rod 901. The two ends of the upper mold 1 are connected to the fixed block 904. The rotating shaft 903 is installed on the inner side of the fixed block 904 through a bearing. The locking block 905 is fixedly sleeved on the outer side of the rotating shaft 903. One end of the rotating shaft 903 is fixedly connected to the gear 902, and the gear 902 is meshed with the moving rod 901. The two ends of the lower mold 2 near the locking block 905 are fixedly fitted with latching blocks 906. The moving rod 901 has evenly spaced toothed blocks on the side near the gear 902. The locking block 905 has an "L" shaped cross-section.

[0029] In practice, the upper mold 1 and lower mold 2 of the blow molding die are tightly fitted together by the positioning component 3. However, during blow molding, the forming cavity 7 between the upper mold 1 and the lower mold 2 is subjected to a force that expands to both sides, and the positioning component 3 is subjected to a large pressure, which reduces the stability of the blow molding die. After the positioning component 3 is positioned and connected, the electric push rod 5 is activated to drive the moving rod 901 to move to one side, so that the moving rod 901 meshes with the gear 902. The gear 902 then causes the rotating shaft 903 to drive the locking block 905 to rotate, so that one end of the locking block 905 fits with the bottom end of the clamping block 906. This can reposition and connect the upper mold 1 and the lower mold 2, improving the stability of the blow molding die.

[0030] Working principle: When using this blow molding mold that can assist in demolding, firstly, the plastic pre-product is placed into the molding cavity 7. Then, the upper mold 1 and the lower mold 2 are positioned and connected by the positioning component 3 and the locking mechanism 9. After being heated and softened, the plastic is blown into the required shape, such as a bottle, through the blow nozzle 8. The cooling channel 4 cools the plastic workpiece. Then, during demolding, the plastic workpiece can be ejected by the ejector mechanism 6, which facilitates demolding and improves the working efficiency and stability of the blow molding mold. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A blow molding die that can assist in demolding, comprising an upper die (1) and a molding cavity (7), characterized in that: A lower mold (2) is provided below the upper mold (1). The forming cavity (7) and the positioning component (3) are located between the upper mold (1) and the lower mold (2). Cooling channels (4) are provided inside both the upper mold (1) and the lower mold (2). An ejector mechanism (6) is provided in the middle of the upper mold (1) and the lower mold (2) near the forming cavity (7). The ejector mechanism (6) includes a top plate (601), a return spring (602), a cam (603), a roller (604), an ejector rod (605), and a motor (606). A top plate (601) is provided in the middle of the upper mold (1) and the lower mold (2) near the forming cavity (7).

2. The blow mold for assisting demolding according to claim 1, characterized in that: A push rod (605) is connected to the side of the top plate (601) away from the molding cavity (7). A return spring (602) is sleeved on the outside of the push rod (605). A roller (604) is connected to the end of the push rod (605) away from the top plate (601) through a movable shaft.

3. A blow mold for assisting demolding according to claim 2, characterized in that: Both the upper mold (1) and the lower mold (2) have motors (606) installed in their built-in slots. The end of the motor (606) near the roller (604) is connected to a cam (603) via a coupling.

4. A blow mold for assisting demolding according to claim 1, characterized in that: Electric push rods (5) are fixedly installed at both ends of the upper mold (1), and locking mechanisms (9) are installed at both ends of the upper mold (1) and the lower mold (2) near the electric push rods (5).

5. A blow mold for assisting demolding according to claim 4, characterized in that: One end of the electric push rod (5) is connected to the locking mechanism (9), and the upper mold (1) and the lower mold (2) are provided with a blowhole (8) on the side near the molding cavity (7).

6. A blow mold for assisting demolding according to claim 5, characterized in that: The locking mechanism (9) includes a moving rod (901), a gear (902), a rotating shaft (903), a fixing block (904), a locking block (905), and a locking block (906). One end of the electric push rod (5) is connected to the moving rod (901).

7. A blow mold for assisting demolding according to claim 6, characterized in that: The upper mold (1) is connected to two fixed blocks (904) at both ends. A rotating shaft (903) is installed on the inner side of the fixed block (904) through a bearing. A locking block (905) is fixedly sleeved on the outer side of the rotating shaft (903).

8. A blow mold for assisting demolding according to claim 7, characterized in that: One end of the rotating shaft (903) is fixedly connected to a gear (902), and the gear (902) is meshed with the moving rod (901). The lower mold (2) is fixed with locking blocks (906) at both ends near the locking block (905).

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