Demolding mechanism of injection molding machine

Abstract

The utility model relates to a demolding mechanism of an injection molding machine in the technical field of demolding mechanisms, which comprises a lower mold, an upper mold, a convex mold block, an injection molding cavity and an injection molding port, the upper mold is arranged on the top surface of the lower mold, the top surface of the lower mold is connected with the convex mold block, the injection molding cavity matched with the convex mold block is arranged on the bottom surface of the upper mold, and the injection molding port is connected with the convex mold block. An injection molding cavity is formed in the top surface of the upper mold, an injection molding opening communicating with the injection molding cavity is formed in the top surface of the upper mold, a containing groove is formed in the top surface of the injection molding cavity and is in a mouth shape, an ejection block is inserted into the bottom end of the inner wall of the containing groove, and four hydraulic rods which are opposite in pairs are inserted into the top surface of the upper mold; the telescopic end of each hydraulic rod moves downwards on the inner wall of the storage groove. By arranging the hydraulic rod, the storage groove and the ejection block, the section mold located on the inner wall of the injection molding cavity can be withdrawn, the section mold has the comprehensiveness of pushing the four sides through the square state of the ejection block, then the stability of demolded is improved, and adhesion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of demoulding mechanisms, in particular to a demoulding mechanism of an injection molding machine. Background Art

[0002] Injection molding machine, also known as injection molding machine or injection machine, is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. It is divided into vertical, horizontal, and all-electric types. The injection molding machine can heat the plastic and apply high pressure to the molten plastic to make it ejected and fill the mold cavity.

[0003] The existing injection molding machine needs to be demolded after injection molding, and then the next injection molding process is carried out after demolding, and this cycle is repeated. However, during the demolding work, the mold cavity often sticks to the mold, which often leads to low product yield and reduced overall work efficiency. For this reason, we propose a demolding mechanism for an injection molding machine. Utility Model Content

[0004] In view of the above problems, the utility model provides a demoulding mechanism for an injection molding machine, which has the effect of facilitating demoulding.

[0005] The technical solution of the utility model is:

[0006] A demoulding mechanism of an injection molding machine comprises a lower mold, an upper mold, a convex film block, an injection cavity, and an injection port. The top surface of the lower mold is provided with an upper mold, the top surface of the lower mold is connected to the convex film block, the bottom surface of the upper mold is provided with an injection cavity used in conjunction with the convex film block, the top surface of the upper mold is provided with an injection port connected to the injection cavity, the top surface of the injection cavity is provided with a receiving groove, the receiving groove is mouth-shaped, an ejection block is inserted at the bottom end of the inner wall of the receiving groove, and four hydraulic rods opposite to each other are inserted on the top surface of the upper mold, and the telescopic end of each hydraulic rod moves downward on the inner wall of the receiving groove.

[0007] In a further technical solution, a groove is provided on the top surface of the upper mold, a heat conductive sheet is fixed to the bottom surface of the inner wall of the groove, the bottom surface of the heat conductive sheet is fitted with the top opening of the storage groove, and the shell of the hydraulic rod passes through the four corners of the heat conductive sheet.

[0008] In a further technical solution, an insert plate is inserted into the inner wall of the groove, four vents are opened on the surface of the insert plate, an exhaust fan is fixedly installed on the inner wall of each vent, and the exhaust end face of the exhaust fan faces the top block.

[0009] In a further technical solution, a connection port is provided at the center of the top surface of the plug plate, and the connection port is located on the outer wall of the injection port.

[0010] In a further technical solution, through holes are provided at the four corners of the plug plate, and the outer wall of the shell of the hydraulic rod is fixed to the inner wall of the through hole.

[0011] In a further technical solution, a dustproof net is fixedly installed on the top of the vent.

[0012] The beneficial effects of the utility model are:

[0013] 1. By setting up hydraulic rods, storage grooves and ejector blocks, the mold located on the inner wall of the injection cavity can be ejected. By utilizing the square shape of the ejector block, the mold can be pushed from four sides, thereby improving the stability of the demoulding and avoiding adhesion.

[0014] 2. By setting grooves and heat conducting sheets, the heat inside the injection cavity can be absorbed by the heat conducting sheets, reducing the heat inside the injection cavity, making it easier for the ejector block to push the mold and reduce adhesion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the assembly structure of the groove and the plug board of the embodiment of the utility model;

[0017] Figure 3 It is a side view cross-sectional structural diagram of the injection cavity, the receiving groove, and the ejection block of the embodiment of the utility model;

[0018] Figure 4 It is a schematic structural diagram of a side cross-section of a plug plate and an upper mold according to an embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 1. Lower mold; 2. Upper mold; 3. Convex film block; 4. Injection cavity; 5. Injection port; 6. Hydraulic rod; 7. Storage slot; 8. Ejector block; 9. Groove; 10. Heat conducting sheet; 11. Insert plate; 12. Through hole; 13. Connection port; 14. Ventilation port; 15. Exhaust fan; 16. Dust screen. DETAILED DESCRIPTION

[0021] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0022] Example:

[0023] like Figure 1-Figure 4As shown, a demoulding mechanism of an injection molding machine comprises a lower mold 1, an upper mold 2, a convex film block 3, an injection cavity 4, and an injection port 5. The top surface of the lower mold 1 is provided with an upper mold 2, and the top surface of the lower mold 1 is connected with the convex film block 3. The bottom surface of the upper mold 2 is provided with an injection cavity 4 used in conjunction with the convex film block 3. The top surface of the upper mold 2 is provided with an injection port 5 connected with the injection cavity 4. The top surface of the injection cavity 4 is provided with a receiving groove 7, and the receiving groove 7 is in a mouth shape. An ejection block 8 is inserted at the bottom end of the inner wall of the receiving groove 7. Four hydraulic rods 6 that are opposite to each other in pairs are inserted on the top surface of the upper mold 2. The telescopic end of each hydraulic rod 6 moves downward on the inner wall of the receiving groove 7. A groove 9 is provided on the top surface of the upper mold 2. A heat conducting plate 10 is fixed to the bottom surface of the inner wall of the groove 9. The bottom surface of the heat conducting plate 10 is fitted with the top opening of the receiving groove 7, and the shell of the hydraulic rod 6 passes through the four corners of the heat conducting plate 10. 9 is inserted with a plug plate 11, and a connecting port 13 is provided at the center of the top surface of the plug plate 11. The connecting port 13 is located on the outer wall of the injection port 5. By setting the connecting port 13, the installation of the plug plate 11 can be facilitated. Four vents 14 are provided on the surface of the plug plate 11, and a dustproof net 16 is fixedly installed at the top of the vent 14 to prevent dust from entering the injection cavity 4 through the vent 14. An exhaust fan 15 is fixedly installed on the inner wall of each vent 14, and the exhaust end face of the exhaust fan 15 faces the ejection block 8. By setting the plug plate 11, the vent 14, and the exhaust fan 15, the heat absorption and heat dissipation effect of the heat conducting sheet 10 can be improved, and the interior of the injection cavity 4 can be quickly and conveniently cooled, thereby improving the practicality of the ejection block 8. Through holes 12 are provided at the four corners of the plug plate 11, and the outer wall of the shell of the hydraulic rod 6 is fixed to the inner wall of the through hole 12.

[0024] The working principle of the above technical solution is as follows:

[0025] When the device is working, the injection molding material is injected into the injection molding cavity 4 through the injection port 5. After the injection molding is completed, the exhaust fan 15 is driven to exhaust air. During the exhaust process, the heat conductive sheet 10 absorbs heat from the groove top of the injection molding cavity 4, and then releases heat to the exhaust end of the exhaust fan 15, forming a state of heat absorption and heat release. Subsequently, when the lower mold 1 and the upper mold 2 are separated, the hydraulic rod 6 is driven to allow the ejection block 8 to smoothly extend out of the receiving groove 7 and the groove top surface of the injection molding cavity 4, and then the mold is pushed out of the injection molding cavity 4.

[0026] The above embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A demoulding mechanism of an injection molding machine, comprising a lower mold (1), an upper mold (2), a convex film block (3), an injection cavity (4), and an injection port (5), wherein the upper mold (2) is provided on the top surface of the lower mold (1), the convex film block (3) is connected to the top surface of the lower mold (1), the injection cavity (4) used in conjunction with the convex film block (3) is provided on the bottom surface of the upper mold (2), and the injection port (5) connected to the injection cavity (4) is provided on the top surface of the upper mold (2), wherein: The top surface of the injection cavity (4) is provided with a receiving groove (7), the receiving groove (7) is in a mouth shape, an ejection block (8) is inserted at the bottom end of the inner wall of the receiving groove (7), and the top surface of the upper mold (2) is provided with four hydraulic rods (6) which are opposite to each other in pairs, and the telescopic end of each hydraulic rod (6) moves downward on the inner wall of the receiving groove (7).

2. The demoulding mechanism of an injection molding machine according to claim 1, characterized in that: The top surface of the upper mold (2) is provided with a groove (9), the inner wall bottom surface of the groove (9) is fixed with a heat conductive plate (10), the bottom surface of the heat conductive plate (10) is fitted with the top opening of the storage groove (7), and the shell of the hydraulic rod (6) passes through the four corners of the heat conductive plate (10).

3. The demoulding mechanism of an injection molding machine according to claim 2, characterized in that: An insert plate (11) is inserted into the inner wall of the groove (9), and four ventilation holes (14) are opened on the surface of the insert plate (11). An exhaust fan (15) is fixedly mounted on the inner wall of each ventilation hole (14), and the exhaust end face of the exhaust fan (15) faces the ejection block (8).

4. The demoulding mechanism of an injection molding machine according to claim 3, characterized in that: A connection opening (13) is provided at the center of the top surface of the plug plate (11), and the connection opening (13) is located on the outer wall of the injection port (5).

5. The demoulding mechanism of an injection molding machine according to claim 3, characterized in that: Through holes (12) are provided at the four corners of the plug plate (11), and the outer wall of the shell of the hydraulic rod (6) is fixed to the inner wall of the through hole (12).

6. The demoulding mechanism of an injection molding machine according to claim 3, characterized in that: A dustproof net (16) is fixedly mounted on the top of the ventilation opening (14).

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