Demolding mechanism of plastic tray injection mold

Abstract

The utility model discloses a plastic tray injection mold demolding mechanism which comprises a lower mold base, an upper mold base is arranged above the lower mold base, the lower mold base and the upper mold base are connected through a lifting assembly, a lower mold body is arranged at the upper end of the lower mold base, an upper mold body is arranged at the bottom of the upper mold base, and the lower mold body is connected with the upper mold body. An injection molding opening extending to the bottom of the upper mold body is formed in the upper surface of the upper mold base, a forming groove is formed in the upper surface of the lower mold body, an ejector plate is arranged at the bottom of the forming groove, and an automatic driving mechanism is connected to the bottom of the ejector plate. In the mold closing and opening process of the injection mold, the driving mechanism can automatically drive the ejector plate, so that the ejector plate automatically ejects a formed plastic tray in the mold opening process, the demolding work of the formed plastic tray is automatically completed, the automation degree is high, and the machining efficiency of the plastic tray can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a demoulding mechanism for an injection mold for a plastic pallet. Background Art

[0002] A floor scrubber is a cleaning machine that is suitable for cleaning hard floors and sucking out wastewater at the same time, and taking the wastewater away from the site. It has the advantages of environmental protection, energy saving, and high efficiency. The base of a floor scrubber is usually a plastic tray that can be used to charge the floor scrubber. When the plastic tray base of a floor scrubber is produced, injection molding is usually used.

[0003] After the plastic pallet is formed in the injection mold, it will stick to the inner wall of the mold and is difficult to separate. A demoulding mechanism is often needed to demould the plastic pallet. However, the existing demoulding mechanism often requires manual operation by staff, has a low degree of automation, and has low demoulding efficiency. Therefore, a demoulding mechanism for a plastic pallet injection mold is proposed. Utility Model Content

[0004] The utility model aims to provide a demoulding mechanism for an injection mold of a plastic pallet to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic pallet injection mold demolding mechanism, comprising a lower mold base, an upper mold base is arranged above the lower mold base, the lower mold base and the upper mold base are connected by a lifting assembly, a lower mold body is arranged at the upper end of the lower mold base, an upper mold body is arranged at the bottom of the upper mold base, an injection port extending to the bottom of the upper mold body is provided on the upper surface of the upper mold base, a molding groove is provided on the upper surface of the lower mold body, a top plate is provided at the bottom of the molding groove, and an automatic driving mechanism is connected to the bottom of the top plate.

[0006] As a further preferred embodiment of the present technical solution, the automatic driving mechanism is composed of a connecting rod, an elastic block and a movable plate. A transverse through groove which runs across the lower mold body is provided on the side wall of the lower mold body, and the movable plate is located inside the transverse through groove. The movable plate and the top plate are fixedly connected by a connecting plate. A connecting groove extending to the transverse through groove is provided at the bottom of the forming groove, and the connecting groove is slidably fitted with the connecting plate. Both ends of the movable plate extend to the outside of the lower mold body, and both ends of the movable plate are provided with connecting holes. An elastic block is suspended above the connecting hole, and the elastic block is fixedly connected to the upper mold base through a connecting rod.

[0007] As a further preferred embodiment of the present technical solution, the elastic block is a cylindrical structure, and the outer diameter of the elastic block is greater than the inner diameter of the connecting hole.

[0008] As a further preferred embodiment of the present technical solution, a chamfered corner is provided at an edge position of the bottom of the elastic block.

[0009] As a further preferred embodiment of the present technical solution, an empty groove is provided on the upper surface of the lower die base below the elastic block.

[0010] As a further preferred embodiment of the present technical solution, two springs are fixedly connected between the upper end of the movable plate and the top wall of the transverse through groove, and the two springs are symmetrically distributed on both sides of the upper end of the movable plate.

[0011] As a further preferred embodiment of the present technical solution, the lifting assembly consists of a cylinder and a telescopic rod, the two corner positions on the upper end of the lower die base are fixedly connected with the cylinder, the output shaft of the cylinder is fixedly connected to the bottom of the upper die base, the other two corner positions of the upper die of the lower die base are fixedly connected with the telescopic rod, and the upper end of the telescopic rod is fixedly connected to the bottom of the upper die base.

[0012] The utility model provides a demoulding mechanism for a plastic pallet injection mold, which has the following beneficial effects:

[0013] The utility model adopts a designed ejecting plate and a driving mechanism acting on the ejecting plate. During the process of mold closing and mold opening of the injection mold, the driving mechanism can automatically drive the ejecting plate, so that the ejecting plate can automatically eject the molded plastic pallet during the mold opening process, thereby automatically completing the demoulding work of the molded plastic pallet. The automation degree is high and the processing efficiency of the plastic pallet can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of another viewing angle of the overall structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the disassembly of the overall structure of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the top material plate and the movable plate in the utility model;

[0018] In the figure: 1. lower mold base; 2. upper mold base; 3. lower mold body; 4. upper mold body; 5. injection port; 6. molding groove; 7. telescopic rod; 8. cylinder; 9. connecting rod; 10. elastic block; 11. movable plate; 12. empty groove; 13. connecting groove; 14. transverse through groove; 15. ejector plate; 16. connecting plate; 17. spring; 18. connecting hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] The utility model provides a technical solution: Figures 1 to 4 As shown, in this embodiment, a demoulding mechanism of a plastic pallet injection mold comprises a lower mold base 1, an upper mold base 2 is arranged above the lower mold base 1, the lower mold base 1 and the upper mold base 2 are connected by a lifting assembly, a lower mold body 3 is arranged at the upper end of the lower mold base 1, an upper mold body 4 is arranged at the bottom of the upper mold base 2, an injection port 5 extending to the bottom of the upper mold body 4 is opened on the upper surface of the upper mold base 2, a molding groove 6 is opened on the upper surface of the lower mold body 3, a top plate 15 is arranged at the bottom of the molding groove 6, and an automatic driving mechanism is connected to the bottom of the top plate 15, and the automatic driving mechanism is composed of a connecting rod 9, an elastic block 10 and a movable plate 1. 1, a transverse through groove 14 is provided on the side wall of the lower mold body 3 and runs through the lower mold body 3, the movable plate 11 is located inside the transverse through groove 14, the movable plate 11 and the ejector plate 15 are fixedly connected by a connecting plate 16, a connecting groove 13 extending to the transverse through groove 14 is provided at the bottom of the molding groove 6, the connecting groove 13 and the connecting plate 16 are slidably fitted, both ends of the movable plate 11 extend to the outside of the lower mold body 3, and both ends of the movable plate 11 are provided with connecting holes 18, an elastic block 10 is suspended above the connecting hole 18, and the elastic block 10 is fixedly connected to the upper mold base 2 through a connecting rod 9.

[0021] The elastic block 10 is a cylindrical structure, and the outer diameter of the elastic block 10 is larger than the inner diameter of the connecting hole 18 . The edge of the bottom of the elastic block 10 is provided with a rounded corner.

[0022] The edge position at the bottom of the elastic block 10 is provided with a rounded corner, which can facilitate the elastic block 10 to be inserted into the interior of the connecting hole 18. The outer diameter of the elastic block 10 is larger than the inner diameter of the connecting hole 18, which can ensure that the elastic block 10 will be elastically deformed after being inserted into the connecting hole 18, thereby ensuring that the expansion force of the elastic block 10 to restore the deformation can fix the elastic block 10 and the movable plate 11 together.

[0023] The upper surface of the lower die base 1 is provided with an empty groove 12 below the elastic block 10 .

[0024] By providing the hollow groove 12 , the bottom of the movable plate 11 can be in a hollow state, thereby ensuring that the elastic block 10 can be inserted into the connecting hole 18 .

[0025] Among them, two springs 17 are fixedly connected between the upper end of the movable plate 11 and the top wall of the transverse through slot 14 , and the two springs 17 are symmetrically distributed on both sides of the upper end of the movable plate 11 .

[0026] The spring 17 can ensure that the movable plate 11 can be tightly attached to the bottom of the transverse through groove 14 under normal conditions, thereby ensuring that the ejector plate 15 will not loosen in the molding groove 6.

[0027] Among them, the lifting assembly is composed of a cylinder 8 and a telescopic rod 7. The two corners on the upper end of the lower mold base 1 are fixedly connected to the cylinder 8, and the output shaft of the cylinder 8 is fixedly connected to the bottom of the upper mold base 2. The other two corners of the upper mold of the lower mold base 1 are fixedly connected to the telescopic rod 7, and the upper end of the telescopic rod 7 is fixedly connected to the bottom of the upper mold base 2.

[0028] The upper die base 2 can be controlled to move up and down by the two cylinders 8 , and the upper die base 2 can be ensured to be stable when moving up and down by the telescopic rod 7 .

[0029] The utility model provides a demoulding mechanism for a plastic pallet injection mold, and the specific working principle is as follows:

[0030] During use, when the lower mold body 3 and the upper mold body 4 are closed, the upper mold base 2 will drive the elastic block 10 to move downward and insert it into the connecting hole 18. The side wall of the elastic block 10 will be squeezed by the inner wall of the connecting hole 18. The expansion force generated by the elastic block 10 recovering its deformation will fix the elastic block 10 and the movable plate 11 together. When the plastic pallet needs to be opened after molding, the upper mold base 2 will drive the elastic block 10 to move upward and drive the movable plate 11 to move upward, thereby moving the ejecting plate 15 upward and ejecting the molded plastic pallet. When the movable plate 11 contacts the top wall of the transverse through groove 14, it will be forced to stop moving. As the upper mold base 2 continues to move upward, the elastic block 10 will be pulled out of the connecting hole 18, and the movable plate 11 will return to its initial position under the action of the spring 17.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A plastic pallet injection mold demoulding mechanism, comprising a lower mold base (1), characterized in that: An upper mold base (2) is arranged above the lower mold base (1); the lower mold base (1) and the upper mold base (2) are connected via a lifting assembly; a lower mold body (3) is arranged at the upper end of the lower mold base (1); an upper mold body (4) is arranged at the bottom of the upper mold base (2); an injection port (5) extending to the bottom of the upper mold body (4) is provided on the upper surface of the upper mold base (2); a molding groove (6) is provided on the upper surface of the lower mold body (3); a top plate (15) is arranged at the bottom of the molding groove (6); and an automatic driving mechanism is connected to the bottom of the top plate (15).

2. A plastic pallet injection mold demoulding mechanism according to claim 1, characterized in that: The automatic driving mechanism is composed of a connecting rod (9), an elastic block (10) and a movable plate (11); a transverse through groove (14) which runs across the lower mold body (3) is provided on the side wall of the lower mold body (3); the movable plate (11) is located inside the transverse through groove (14); the movable plate (11) and the ejector plate (15) are fixedly connected via a connecting plate (16); a connecting groove (13) which extends to the transverse through groove (14) is provided at the bottom of the molding groove (6); the connecting groove (13) and the connecting plate (16) are slidably engaged; both ends of the movable plate (11) extend to the outside of the lower mold body (3); and both ends of the movable plate (11) are provided with connecting holes (18); an elastic block (10) is suspended above the connecting hole (18); and the elastic block (10) is fixedly connected to the upper mold base (2) via a connecting rod (9).

3. A plastic pallet injection mold demoulding mechanism according to claim 2, characterized in that: The elastic block (10) is a cylindrical structure, and the outer diameter of the elastic block (10) is greater than the inner diameter of the connecting hole (18).

4. A plastic pallet injection mold demoulding mechanism according to claim 2, characterized in that: The edge position of the bottom of the elastic block (10) is provided with a rounded corner.

5. The demoulding mechanism of a plastic pallet injection mold according to claim 2, characterized in that: An empty groove (12) is provided on the upper surface of the lower die seat (1) below the elastic block (10).

6. A plastic pallet injection mold demoulding mechanism according to claim 2, characterized in that: Two springs (17) are fixedly connected between the upper end of the movable plate (11) and the top wall of the transverse through slot (14), and the two springs (17) are symmetrically distributed on both sides of the upper end of the movable plate (11).

7. The demoulding mechanism of a plastic pallet injection mold according to claim 1, characterized in that: The lifting assembly is composed of a cylinder (8) and a telescopic rod (7); the two corner positions of the upper end of the lower die base (1) are fixedly connected to the cylinder (8); the output shaft of the cylinder (8) is fixedly connected to the bottom of the upper die base (2); the other two corner positions of the upper die of the lower die base (1) are fixedly connected to the telescopic rod (7); the upper end of the telescopic rod (7) is fixedly connected to the bottom of the upper die base (2).

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