High-stability injection mold

Abstract

The high-stability injection mold comprises an upper mold body and a lower mold body, the upper mold body is provided with an injection molding opening and an injection molding runner, the injection molding opening communicates with the injection molding runner, and the injection molding opening is used for being connected with an injection molding connector; the upper mold is provided with a sealing piece, and the sealing piece is used for closing the injection molding opening; when the injection molding opening is connected with an injection molding connector, the injection molding opening is conducted; when the injection molding connector is far away from the injection molding opening, the sealing piece closes the injection molding opening. In actual use, dust and impurities enter the injection molding opening, and the situation easily affects normal machining of a subsequent mold, so that the sealing piece is arranged, when the injection molding connector is far away from the injection molding opening, the sealing piece closes the injection molding opening, the situation that the dust and the impurities enter the injection molding opening is reduced, and the machining stability is improved; and through the automatic sealing mode, the situation that a user forgets to seal the injection molding opening through a sealing piece is reduced.

Description

Technical Field

[0001] The present application relates to the field of molds, and in particular to a high-stability injection mold. Background Art

[0002] Moulds are various moulds and tools used in industrial production to obtain the required products by injection moulding, blow moulding, extrusion, die casting or forging, smelting, stamping and other methods.

[0003] The Chinese invention patent with the patent number CN104175498A discloses a gate cutting injection mold, including: a base, an upper mold, a lower mold, a top plate, a guide pin and a guide sleeve, an injection tube, a tube core, a spring and a heater. The base is provided with a lower mold, and the lower mold is provided with an upper mold. The top plate is provided above the upper mold, and guide pins and guide sleeves are provided around the base. The injection tube is provided above the upper mold and is coaxially arranged with the central axis of the upper mold. A tube core is provided in the injection tube, a spring is sleeved on the tube core, and a heater is provided on the outside of the injection tube.

[0004] In actual use, when the mold is out of use, in order to reduce the entry of dust and impurities, the staff needs to seal the injection port, which is inconvenient and needs to be improved. Summary of the invention

[0005] In order to reduce the entry of dust and impurities into the injection port, the present application provides a high-stability injection mold.

[0006] The present application provides a high-stability injection mold, which adopts the following technical solution:

[0007] A high-stability injection mold comprises an upper mold and a lower mold, wherein the upper mold is provided with an injection port and an injection channel, wherein the injection port is connected to the injection channel and is used to connect an injection joint; the upper mold is provided with a closing piece, wherein the closing piece is used to close the injection port; when the injection port is connected to the injection joint, the injection port is conducted; when the injection joint is away from the injection port, the closing piece closes the injection port.

[0008] By adopting the above technical solution, in actual use, there is a situation where dust and impurities enter the injection port, which is easy to affect the normal processing of the subsequent mold. Therefore, a closing piece is provided. When the injection joint is away from the injection port, the closing piece closes the injection port, reducing the situation where dust and impurities enter the injection port, improving the stability of processing, and through this automatic closing method, reducing the situation where the user forgets to close the injection port with the closing piece.

[0009] Optionally, the upper mold is provided with a mounting groove. The closing member includes a mounting screw, a closing plate, and a limiting spring. The closing plate is threadedly connected to the mounting screw and moves along the axis of the mounting screw. The limiting spring is located at the bottom of the mounting groove, and the elastic force of the limiting spring is used to limit the movement of the closing plate towards the bottom of the mounting groove. The closing plate is provided with a communication hole that penetrates the closing plate in the vertical direction, and the injection port passes through the communication hole.

[0010] By adopting the above technical solution, in actual use, the injection port is blocked by the closing plate. When it is necessary to connect the injection port with the injection joint, the closing plate is pressed to make the closing plate move along the axis of the mounting screw. At this time, the limiting spring is gradually compressed, and the injection port passes through the communication hole, which is convenient for connecting the injection port with the injection joint. When the injection joint is disconnected from the injection port, the elastic force of the limiting spring causes the closing plate to rotate, thereby closing the injection port.

[0011] Optionally, the mounting screw includes a threaded portion and a rod portion. The threaded portion is located at one end of the rod portion away from the bottom of the mounting groove, and the rod portion is connected to the mounting groove. The closing plate is threadedly connected to the threaded portion. When the closing plate is located at the threaded portion, the closing plate closes the injection port. When the closing plate moves to the rod portion, the injection port communicates with the communication hole.

[0012] By adopting the above technical solution, the threaded portion and the rod portion are provided. The threaded portion is used to control the rotation of the closing plate. When the closing plate receives a force towards the bottom of the mounting groove, the closing plate rotates and moves towards the bottom of the mounting groove. When the closing plate moves to the rod portion, the communication hole of the closing plate communicates with the injection port. At this time, since the connection between the closing plate and the rod portion is only a sliding connection, when the closing plate moves towards the bottom of the mounting groove, the injection port passes through the communication hole, which is convenient for connecting the injection port with the injection joint.

[0013] Optionally, the closing plate is provided with an annular groove at one end close to the bottom of the mounting groove. The communication hole is located at the bottom of the annular groove, and the injection port is embedded in the annular groove.

[0014] By adopting the above technical solution, the annular groove is provided, and the injection port is embedded in the annular groove, which is convenient for closing the injection port, reducing the entry of dust and impurities, improving the overall injection quality, and reducing the influence of dust and impurities on normal injection.

[0015] Optionally, a positioning block is provided at the bottom of the annular groove, and a sliding groove is provided at the bottom of the annular groove. The sliding groove is located on the side of the positioning block away from the communication hole. A sliding spring is provided at the bottom of the sliding groove, and a sliding block is provided at one end of the sliding spring away from the bottom of the sliding groove. The sliding block protrudes from the bottom of the annular groove, and the sliding block and the positioning block form a clamping groove for the injection port to be embedded.

[0016] By adopting the above technical solution, positioning blocks and sliding blocks are set, and a closed area for the injection port is formed by the positioning blocks, sliding blocks and the bottom of the annular groove, which further reduces the entry of dust and impurities, improves the overall processing stability, and reduces the impact of dust and impurities on normal injection molding.

[0017] Optionally, the sliding block is provided with a guiding surface and a limiting surface, the guiding surface is located at one end of the sliding block away from the sliding spring, the guiding surface extends from a direction close to the positioning block toward a direction away from the bottom of the sliding groove, and the guiding surface is used to abut against the injection port, the limiting surface is located at a side of the sliding block away from the guiding surface and at one end of the sliding block away from the sliding spring, the limiting surface extends from a direction away from the positioning block toward a direction away from the bottom of the sliding groove, and the limiting surface is used to abut against the injection port.

[0018] By adopting the above technical solution, a guiding surface and a limiting surface are set. When the closing plate rotates, the injection port abuts against the limiting surface and causes the sliding block to move toward the bottom of the sliding groove, thereby facilitating the closure of the injection port by the sliding block and the positioning block; the limiting surface is used to abut against the sliding block. When the closing plate needs to be rotated, the injection port abuts against the sliding block and causes the sliding block to move toward the bottom of the sliding groove, thereby facilitating the injection port to break away from the limit of the sliding block and the positioning block.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. A closure is provided. When the injection joint is away from the injection port, the closure closes the injection port, which reduces the dust and impurities from entering the injection port, improves the processing stability, and reduces the situation where the user forgets to close the injection port with the closure by this automatic closure method;

[0021] 2. Set up the installation screw, the closing plate and the limit spring, and use the closing plate to cover the injection port. When the injection port needs to be connected to the injection joint, press the closing plate to move it along the axis of the installation screw. At this time, the limit spring is gradually compressed, and the connecting hole is used for the injection port to pass through, so that the injection port and the injection joint can be connected. When the injection joint is disconnected from the injection port, the elastic force of the limit spring causes the closing plate to rotate, thereby closing the injection port.

[0022] 3. A guiding surface and a limiting surface are set. When the closing plate rotates, the injection port abuts against the limiting surface and causes the sliding block to move toward the bottom of the sliding groove, thereby facilitating the closure of the injection port by the sliding block and the positioning block; the limiting surface is used to abut against the sliding block. When the closing plate needs to be rotated, the injection port abuts against the sliding block and causes the sliding block to move toward the bottom of the sliding groove, thereby facilitating the injection port to break away from the limit of the sliding block and the positioning block. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a cross-sectional schematic diagram of an embodiment.

[0024] Figure 2 It is an overall schematic diagram of the closing plate.

[0025] Figure 3 It is Figure 1 An enlarged schematic diagram of A in

[0026] Figure 4 It is a cross-sectional schematic diagram of the closing plate.

[0027] Explanation of reference numerals: 1. Upper mold; 2. Lower mold; 3. Injection port; 31. Injection part; 32. Extension pipe; 4. Injection runner; 5. Installation groove; 6. Sealing member; 61. Installation screw; 611. Threaded part; 612. Rod part; 62. Closing plate; 63. Limiting spring; 7. Ring groove; 8. Communication hole; 9. Positioning block; 10. Sliding groove; 11. Sliding spring; 12. Sliding block; 13. Guiding surface; 14. Limiting surface. Detailed implementation manners

[0028] The following further elaborates on the present application in conjunction with the accompanying drawings and embodiments.

[0029] An embodiment of the present application discloses a highly stable injection mold. Referring to Figures 1 to 4 , it includes an upper mold 1 and a lower mold 2. The upper mold 1 is provided with an injection port 3 and an injection runner 4. The injection port 3 includes an injection part 31 and an extension pipe 32. The injection part 31 communicates with the injection runner 4. The extension pipe 32 is located at one end of the injection part 31 away from the injection runner 4, and the extension pipe 32 is used to connect an injection joint.

[0030] The upper mold 1 is provided with an installation groove 5. The installation groove 5 is located on the side of the upper mold 1 where the injection port 3 is provided. The upper mold 1 is provided with a sealing member 6, and the sealing member 6 is used to close the injection port 3. The sealing member 6 includes an installation screw 61, a closing plate 62, and a limiting spring 63. The installation screw 61 includes a threaded part 611 and a rod part 612. The threaded part 611 is located at one end of the rod part 612 away from the bottom of the installation groove 5, and the rod part 612 is connected to the installation groove 5. The closing plate 62 is threadedly connected to the threaded part 611. When the closing plate 62 moves along the axis of the threaded part 611, the closing plate 62 rotates. When the closing plate 62 moves along the axis of the rod part 612, the closing plate 62 does not rotate.

[0031] The limiting spring 63 is located at the bottom of the installation groove 5. The limiting spring 63 is sleeved on the installation screw 61. The limiting spring 63 abuts against the closing plate 62, and the elastic force of the limiting spring 63 is used to limit the closing plate 62 from moving towards the direction close to the bottom of the installation groove 5.

[0032] The closing plate 62 is provided with an annular groove 7, and the annular groove 7 is located at one end of the closing plate 62 close to the bottom of the installation groove 5. A communication hole 8 is provided at the bottom of the annular groove 7, and the communication hole 8 penetrates through the closing plate 62. The penetrating direction of the communication hole 8 is the vertical direction, and the extension pipe 32 passes through the communication hole 8.

[0033] When the closing plate 62 is located at the threaded part 611, the extension pipe 32 is embedded in the annular groove 7 and is misaligned with the communication hole 8; when the closing plate 62 moves to the rod part 612, the extension pipe 32 communicates with the communication hole 8.

[0034] A positioning block 9 is provided at the bottom of the annular groove 7. The positioning block 9 is located on one side of the communication hole 8, and the positioning block 9 is used to abut against the extension pipe 32. A sliding groove 10 is provided at the bottom of the annular groove 7. The sliding groove 10 is located on the side of the positioning block 9 away from the communication hole 8. The distance between the sliding groove 10 and the positioning block 9 is sufficient for the extension rod to be embedded. A sliding spring 11 is provided at the bottom of the sliding groove 10. One end of the sliding spring 11 away from the bottom of the sliding groove 10 is provided with a sliding block 12. The sliding block 12 protrudes from the bottom of the annular groove 7. The sliding block 12 and the positioning block 9 form a clamping groove, and the injection port 3 is placed in the clamping groove.

[0035] The sliding block 12 is provided with a guiding surface 13 and a limiting surface 14. The guiding surface 13 is located at one end of the sliding block 12 away from the sliding spring 11. The guiding surface 13 extends in a direction away from the bottom of the sliding groove 10 along the direction close to the positioning block 9. The guiding surface 13 is used to abut against the extension pipe 32. The limiting surface 14 is located on the side of the sliding block 12 facing away from the guiding surface 13 and at one end of the sliding block 12 away from the sliding spring 11. The limiting surface 14 extends in a direction away from the bottom of the sliding groove 10 along the direction away from the positioning block 9. The limiting surface 14 is used to abut against the extension pipe 32.

[0036] In actual use, an elastic ring may be provided on the side wall of the rod part 612, and the elastic ring is used to abut against one end of the closing plate 62 away from the bottom of the installation groove 5. When it is necessary to keep the extension pipe 32 in an open state, the closing plate 62 is pressed down until one end of the closing plate 62 away from the installation groove 5 is located on the side of the elastic ring close to the bottom of the installation groove 5. By abutting against the closing plate 62 with the elastic ring, the situation that the closing plate 62 returns to its original position due to the reduction of the limiting spring 63 is reduced.

[0037] The implementation principle of the high-stability injection mold in the embodiment of the present application is as follows: In actual use, when an injection mold needs to be formed, the closing plate 62 is pressed so that the closing plate 62 moves in a direction close to the bottom of the installation groove 5. When it moves to the rod part 612, the communication hole 8 of the closing plate 62 is aligned with the extension pipe 32. At this time, the closing plate 62 is continuously moved, and the extension pipe 32 passes through the communication hole 8, thus facilitating the connection of the injection joint. By this method, the situation that dust and impurities enter the injection port 3 is reduced, the stability of injection molding is improved, and the influence of dust and impurities on injection molding is reduced.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A high-stability injection mold, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) is provided with an injection port (3) and an injection channel (4), the injection port (3) is connected to the injection channel (4), and the injection port (3) is used to connect an injection joint; The upper mold (1) is provided with a closing piece (6), and the closing piece (6) is used to close the injection port (3); when the injection port (3) is connected to the injection connector, the injection port (3) is connected; when the injection connector is away from the injection port (3), the closing piece (6) closes the injection port (3).

2. The high stability injection mold according to claim 1, characterized in that: The upper mold (1) is provided with a mounting groove (5), the closing member (6) comprises a mounting screw (61), a closing plate (62) and a limiting spring (63), the closing plate (62) is threadedly connected to the mounting screw (61), the closing plate (62) moves along the axial direction of the mounting screw (61), the limiting spring (63) is located at the bottom of the mounting groove (5), and the elastic force of the limiting spring (63) is used to limit the closing plate (62) from moving in a direction close to the bottom of the mounting groove (5); The closing plate (62) is provided with a connecting hole (8), the connecting hole (8) passes through the closing plate (62), the connecting direction of the connecting hole (8) is a vertical direction, and the connecting hole (8) is for the injection port (3) to pass through.

3. The high stability injection mold according to claim 2, characterized in that: The mounting screw rod (61) comprises a threaded portion (611) and a rod portion (612), the threaded portion (611) being located at an end of the rod portion (612) away from the bottom of the mounting groove (5), the rod portion (612) being connected to the mounting groove (5), and the closing plate (62) being threadedly connected to the threaded portion (611); When the closing plate (62) is located at the threaded portion (611), the closing plate (62) closes the injection port (3); when the closing plate (62) moves to the rod portion (612), the injection port (3) is connected to the connecting hole (8).

4. The high stability injection mold according to claim 2, characterized in that: The closing plate (62) is provided with an annular groove (7), the annular groove (7) is located at one end of the closing plate (62) close to the bottom of the mounting groove (5), the communicating hole (8) is located at the bottom of the annular groove (7), and the annular groove (7) is for the injection port (3) to be embedded.

5. The high stability injection mold according to claim 4, characterized in that: A positioning block (9) is provided at the bottom of the annular groove (7), a sliding groove (10) is provided at the bottom of the annular groove (7), the sliding groove (10) is located on the side of the positioning block (9) away from the connecting hole (8), a sliding spring (11) is provided at the bottom of the sliding groove (10), a sliding block (12) is provided at one end of the sliding spring (11) away from the bottom of the sliding groove (10), the sliding block (12) protrudes from the bottom of the annular groove (7), the sliding block (12) and the positioning block (9) form a clamping groove, and the injection port (3) is embedded in the clamping groove.

6. The high stability injection mold according to claim 5, characterized in that: The sliding block (12) is provided with a guiding surface (13) and a limiting surface (14); the guiding surface (13) is located at an end of the sliding block (12) away from the sliding spring (11); the guiding surface (13) extends in a direction close to the positioning block (9) toward a direction away from the bottom of the sliding groove (10); the guiding surface (13) is used to abut against the injection port (3); the limiting surface (14) is located on a side of the sliding block (12) away from the guiding surface (13) and is located at an end of the sliding block (12) away from the sliding spring (11); the limiting surface (14) extends in a direction away from the positioning block (9) toward a direction away from the bottom of the sliding groove (10); the limiting surface (14) is used to abut against the injection port (3).

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