Plastic box mold with rapid demolding effect

Abstract

The utility model relates to the technical field of plastic box production, and discloses a plastic box mould with a quick demoulding effect, which comprises a base, a top plate, a lower mould base and an upper mould base, the top of the lower mould base is provided with a cavity matched with the upper mould base, the inside of the cavity is slidably connected with a push plate, the bottom of the inner wall of the cavity is fixedly connected with a hydraulic cylinder; the upper end of the hydraulic cylinder is fixedly connected with a sliding plate; according to the plastic box mold with the rapid demolding effect, an upper mold base is driven by an electric telescopic rod to move downwards, so that an injection molding cavity is formed between the upper mold base and a lower mold base, injection molding is conducted on the injection molding cavity through an injection molding hole to form a plastic box, and after the plastic box is cooled, a sliding plate, a connecting rod and a disc move downwards through operation of a hydraulic cylinder; according to the plastic box demolding device, the cavity can be inflated through operation of the air pump, so that demolding of the plastic box is more convenient, the push plate can move upwards through operation of the hydraulic cylinder, the plastic box in the lower mold base is pushed out, and demolding of the device is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic box production, in particular to a plastic box mould with a rapid demoulding effect. Background Art

[0002] The plastic box mold is mainly composed of a fixed mold base, a movable mold base, and an oil cylinder that cooperate with each other. The oil cylinder pushes the movable mold base to cooperate closely with the fixed mold base to form a plastic box injection cavity. The plastic box is formed by injection molding through the injection hole in the middle of the fixed mold base. After cooling, due to the shrinkage of the plastic box, the movable mold base generally uses a convex mold, and the plastic box will adhere to the movable mold base; the plastic box after demoulding is deburred to obtain a finished plastic box. The commonly used plastic box production molds currently have the following defects: it is not convenient for automatic demoulding, and the mold needs to be taken out manually. At the same time, the mold is easily damaged during the demoulding process, which affects the yield of the plastic box;

[0003] In the prior art, for example, announcement number CN217834555U proposes a plastic box production mold. The present technical solution discloses a plastic box production mold, including: a base; a lower mold, the top of the base is equipped with a lower mold, and the inner left and right sides of the lower mold are both equipped with movable frames that slide up and down; a fixed frame, the fixed frame is fixedly connected to the top of the base, and the upper and lower sides of the top of the fixed frame are both equipped with electric telescopic rods; an upper mold, the upper mold is fixedly connected to the movable end of the electric telescopic rod, a cavity is provided inside the lower mold, and the lower mold and the upper mold cooperate to form a plastic box injection cavity, the inner left and right sides of the lower mold are both equipped with springs for resetting the movable frame upward, and an ejector plate is fixedly connected to the inner side of the movable frame. The plastic box production mold is easy to automatically demould and automatically remove the mold. At the same time, the mold is not easily damaged during the demoulding process when the upper mold is removed, thereby improving the yield rate of plastic boxes.

[0004] However, when the staff uses the device to produce plastic boxes, after the plastic box is formed and cooled, the upper mold is driven up and down by the electric telescopic rod, so that the ejector rod moves upward, and the movable frame is reset upward by the spring, so that the ejector plate drives the plastic box after injection molding to move upward, so that the plastic box is demoulded. During the injection molding process, the plastic has a certain degree of adhesion, so the plastic box will adhere to the inside of the lower mold base after molding. Therefore, it is difficult to eject the plastic box only by two springs, and it is easy to cause damage to the plastic box, which makes the use of the device inconvenient;

[0005] In order to solve the above problems, the present application proposes a plastic box mold with a quick demoulding effect. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a plastic box mold with a quick demoulding effect, so as to at least solve one of the problems raised by the background technology, thereby making the use of the plastic box production mold more convenient.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic box mold with a quick demolding effect, comprising a base, a top plate, a lower mold base and an upper mold base, a cavity matching the upper mold base is provided on the top of the lower mold base, a push plate is slidably connected to the inside of the cavity, a hydraulic cylinder is fixedly connected to the bottom of the inner wall of the cavity, a sliding plate is fixedly connected to the upper end of the hydraulic cylinder, a connecting rod is fixedly connected to the top of the sliding plate, a disc is fixedly connected to the upper end of the connecting rod, a round block is fixedly connected to the top of the disc, a round groove matching the round block is provided on the push plate, an air pump is fixedly connected to one side of the lower mold base, an air pipe is fixedly connected to the output end of the air pump, an annular tube is embedded in the inner wall of the cavity, one end of the air pipe is fixedly connected to the annular tube, and the air pipe is connected to the inside of the annular tube, a plurality of through holes are provided on the outer wall of the annular tube, and an adjustment component is slidably connected to the bottom of the upper mold base.

[0008] Preferably, the adjustment assembly includes a movable plate slidably connected to the bottom of the upper mold base, and connecting plates are fixedly connected on both sides of the movable plate. Limiting bolts penetrate the connecting plates, and the limiting bolts are threadedly connected to the connecting plates. One end of the limiting bolt is fixedly connected to a knob, and the other end is set against the side wall of the upper mold base.

[0009] Preferably, there are a plurality of round blocks, which are evenly distributed on the top of the push plate in a filling array.

[0010] Preferably, the connecting rod is hollow, a first air hole is opened in the outer wall of the connecting rod, a circular hole is opened at the bottom of the round block on the disc, the round block is hollow, and a second air hole is opened in the outer wall cavity of the round block.

[0011] Preferably, a plurality of grooves matching the limit bolts are provided on both sides of the upper die base, and the grooves are evenly distributed on both sides of the upper die base in a linear array.

[0012] Preferably, the outer wall of the knob is covered with an anti-slip cover.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The plastic box mold with a quick demoulding effect, when using the plastic box production mold, the upper mold base is driven to move downward by the electric telescopic rod, so that the upper mold base and the lower mold base are tightly fitted, an injection cavity is formed between the upper mold base and the lower mold base, and the injection cavity is injection molded through the injection hole to form a plastic box. When the plastic box is cooled, the sliding plate, the connecting rod and the disc are moved downward by the operation of the hydraulic cylinder. When the disc moves to the bottom of the annular tube, the air pump is operated to inflate the inside of the cavity, thereby making it easier to demould the plastic box. At this time, the sliding plate, the connecting rod and the disc are moved upward by the operation of the hydraulic cylinder. After the disc and the push plate are tightly fitted, the hydraulic cylinder continues to operate to move the push plate upward, thereby pushing out the plastic box inside the lower mold base, thereby making it easier to demould the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0017] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure at B in the middle;

[0019] Figure 5 It is a schematic diagram of the overall structure of the push plate of the utility model.

[0020] In the figure: 1. base; 2. top plate; 3. lower die base; 4. upper die base; 5. cavity; 6. push plate; 7. hydraulic cylinder; 8. sliding plate; 9. connecting rod; 10. disc; 11. circular groove; 12. round block; 13. annular tube; 14. air pump; 15. air pipe; 16. through hole; 17. movable plate; 18. connecting plate; 19. limit bolt; 20. knob; 21. groove; 22. first air hole; 23. circular hole; 24. second air hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5A plastic box mold with a quick demoulding effect comprises a base 1, a top plate 2, a lower mold base 3 and an upper mold base 4. The top of the lower mold base 3 is provided with a cavity 5 matching the upper mold base 4, and a push plate 6 is slidably connected to the inside of the cavity 5. A hydraulic cylinder 7 is fixedly connected to the bottom of the inner wall of the cavity 5, and a sliding plate 8 is fixedly connected to the upper end of the hydraulic cylinder 7. A connecting rod 9 is fixedly connected to the top of the sliding plate 8, and a disc 10 is fixedly connected to the upper end of the connecting rod 9. A round block 12 is fixedly connected to the top of the disc 10, and a round groove 11 matching the round block 12 is provided on the push plate 6. An air pump 14 is fixedly connected to one side of the lower mold base 3, and an air pipe 15 is fixedly connected to the output end of the air pump 14. An annular tube 13 is embedded in the inner wall of the cavity 5, and one end of the air pipe 15 is fixedly connected to the annular tube 13, and the air pipe 15 is connected to the inside of the annular tube 13. A plurality of through holes 16 are provided on the outer wall of the annular tube 13, and an adjusting component is slidably connected to the bottom of the upper mold base 4.

[0023] Specific working principle and implementation method: According to the prior art of announcement No. CN217834555U, when the staff uses the device to produce a plastic box, after the plastic box is formed and cooled, the upper mold base 4 is driven up and down by the electric telescopic rod, so that the ejector rod moves upward, and the movable frame is reset upward by the spring, so that the ejector plate drives the plastic box after injection molding to move upward, thereby demolding the plastic box. During the injection molding process, the plastic has a certain adhesion, so the plastic box will adhere to the inside of the lower mold base 3 after molding. Therefore, it is difficult to eject the plastic box only by two springs, and it is easy to cause damage to the plastic box, which makes the use of the device inconvenient; therefore, the technical solution in the publication No. CN217834555U has the technical problems mentioned in the background technology, and the present technical solution can solve the above-mentioned problems. Technical problem in the document: When using the plastic box production mold, the upper mold base 4 is driven to move downward by the electric telescopic rod, so that the upper mold base 4 and the lower mold base 3 are tightly fitted, and an injection cavity is formed between the upper mold base 4 and the lower mold base 3. The injection cavity is injection molded through the injection hole to form a plastic box. When the plastic box is cooled, the hydraulic cylinder 7 is operated to move the sliding plate 8, the connecting rod 9 and the disc 10 downward. When the disc 10 moves to the bottom of the annular tube 13, the air pump 14 is operated to inflate the cavity 5, so that the plastic box can be demoulded more conveniently. At this time, the hydraulic cylinder 7 is operated to move the sliding plate 8, the connecting rod 9 and the disc 10 upward. After the disc 10 is tightly fitted with the push plate 6, the hydraulic cylinder 7 continues to operate to move the push plate 6 upward, thereby pushing out the plastic box inside the lower mold base 3, thereby making the demoulding of the device more convenient.

[0024] like Figure 2 and Figure 3As shown, the adjustment assembly includes a movable plate 17 slidably connected to the bottom of the upper mold base 4, and connecting plates 18 are fixedly connected on both sides of the movable plate 17. Limiting bolts 19 are passed through the connecting plates 18, and the limiting bolts 19 are threadedly connected to the connecting plates 18. One end of the limiting bolt 19 is fixedly connected to a knob 20, and the other end is set against the side wall of the upper mold base 4. The staff can loosen the limiting bolt 19 by turning the knob 20. At this time, the height of the movable plate 17 can be adjusted. When the height of the movable plate 17 is adjusted to a suitable level, the limiting bolt 19 is tightened, and the height of the push plate 6 is adjusted by the hydraulic cylinder 7 to match the movable plate 17. The advantage of such a setting is that the device can produce plastic boxes of different heights, thereby making the device more practical.

[0025] like Figure 4 As shown, there are multiple round blocks 12, and they are evenly distributed on the top of the push plate 6 in a filling array. By setting the number of round blocks 12 to be multiple, since the circular groove 11 on the push plate 6 and the round blocks 12 are matched, when the disc 10 moves to the bottom of the annular tube 13, the air pump 14 operates, and more gas will enter between the lower mold base 3 and the plastic box through the circular groove 11, thereby making it easier to demold the plastic box after injection molding.

[0026] like Figure 4 As shown, the connecting rod 9 is hollow, and a first air hole 22 is provided on the outer wall of the connecting rod 9. A circular hole 23 is provided on the disc 10 at the bottom of the round block 12. The round block 12 is hollow, and a second air hole 24 is provided in the outer wall cavity of the round block 12. The circular hole 23 is provided on the disc 10 through the first air hole 22 and the second air hole 24 provided on the connecting rod 9 and the outer wall of the round block 12. Therefore, when the air pump 14 is operating, it is not necessary to move the disc 10 to the bottom of the annular tube 13 to allow the gas to enter between the lower mold base 3 and the plastic box, thereby making the use of the device more convenient.

[0027] like Figure 3 As shown, multiple grooves 21 matching the limit bolts 19 are provided on both sides of the upper mold base 4, and the grooves 21 are evenly distributed on both sides of the upper mold base 4 in a linear array. After the staff adjusts the height of the movable plate 17, the limit bolts 19 are tightened. Through the grooves 21 set on both sides of the upper mold base 4, one end of the limit bolt 19 is pressed against the inner wall of the groove 21, and the device can operate normally with high stability.

[0028] like Figure 3 As shown, the outer wall of the knob 20 is provided with an anti-slip sleeve. When the staff adjusts the height of the movable plate 17, it is necessary to rotate the knob 20 to rotate the limit bolt 19. The anti-slip sleeve provided on the outer wall of the knob 20 can effectively increase the friction between people's hands and the knob 20, preventing people from slipping when turning the knob 20, thereby making the use of the device easier and more convenient.

[0029] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plastic box mold with a rapid demoulding effect, comprising a base (1), a top plate (2), a lower mold base (3) and an upper mold base (4), characterized in that: The top of the lower die seat (3) is provided with a cavity (5) matching with the upper die seat (4); the cavity (5) is slidably connected with a push plate (6); the bottom of the inner wall of the cavity (5) is fixedly connected with a hydraulic cylinder (7); the upper end of the hydraulic cylinder (7) is fixedly connected with a sliding plate (8); the top of the sliding plate (8) is fixedly connected with a connecting rod (9); the upper end of the connecting rod (9) is fixedly connected with a disc (10); the top of the disc (10) is fixedly connected with a round block (12); the push plate (6) is provided with a A circular groove (11) is formed to match the block (12), an air pump (14) is fixedly connected to one side of the lower die base (3), an air pipe (15) is fixedly connected to the output end of the air pump (14), an annular tube (13) is embedded in the inner wall of the cavity (5), one end of the air pipe (15) is fixedly connected to the annular tube (13), and the air pipe (15) is connected to the inside of the annular tube (13), a plurality of through holes (16) are opened on the outer wall of the annular tube (13), and an adjustment component is slidably connected to the bottom of the upper die base (4).

2. A plastic box mold with rapid demoulding effect according to claim 1, characterized in that: The adjustment assembly comprises a movable plate (17) slidably connected to the bottom of the upper die seat (4), and connecting plates (18) are fixedly connected to both sides of the movable plate (17), and limiting bolts (19) are passed through the connecting plates (18), and the limiting bolts (19) and the connecting plates (18) are threadedly connected, and one end of the limiting bolt (19) is fixedly connected to a knob (20), and the other end is set against the side wall of the upper die seat (4).

3. A plastic box mold with a quick demoulding effect according to claim 1, characterized in that: There are multiple round blocks (12), which are evenly distributed on the top of the push plate (6) in a filling array.

4. A plastic box mold with rapid demoulding effect according to claim 2, characterized in that: The connecting rod (9) is hollow, and a first air hole (22) is opened on the outer wall of the connecting rod (9). A circular hole (23) is opened on the bottom of the circular block (12) on the disc (10). The circular block (12) is hollow, and a second air hole (24) is opened in the outer wall cavity of the circular block (12).

5. The plastic box mold with rapid demoulding effect according to claim 2, characterized in that: A plurality of grooves (21) matching the limit bolts (19) are provided on both sides of the upper die seat (4), and the grooves (21) are evenly distributed on both sides of the upper die seat (4) in a linear array.

6. The plastic box mold with rapid demoulding effect according to claim 2, characterized in that: The outer wall of the knob (20) is covered with an anti-slip cover.

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