Air inlet valve for injection molding machine

Abstract

The utility model discloses an air inlet valve for an injection molding machine, which comprises a single-action air cylinder, a telescopic rod is arranged in the single-action air cylinder, a matching plate is further arranged on the outer surface of the single-action air cylinder, and the air inlet valve is characterized in that a closed barrel is arranged at the bottom of the telescopic rod, a chamfer surface is arranged on the outer surface of the bottom of the closed barrel, and the matching plate is arranged on the matching plate. An insertion cylinder is arranged at the bottom of the closed cylinder, a bottom side chamfer is arranged on the outer surface of the bottom of the insertion cylinder, a plurality of penetrating holes are formed in the insertion cylinder, when the equipment is installed, an air inlet is formed in the injection molding equipment, air enters the injection molding equipment through the air inlet, and the air inlet is provided with a fixing support. The equipment is integrally installed on the fixing support, the matching plate is fixed to one side of the fixing support through the support hole in the fixing support, and the telescopic rod penetrates through the support hole.

Description

Technical Field

[0001] The utility model relates to the technical field of air nozzle valves of injection molding machines, and specifically relates to an air inlet valve for an injection molding machine. Background Art

[0002] An air inlet is generally provided in an injection molding machine for introducing gas. The existing method uses an integrated valve, etc. to seal the air inlet. The existing sealing method does not use hard sealing to seal the air inlet of the injection molding machine, resulting in poor sealing strength. In the prior art, there is a method of using a cylinder to expand and contract to push a telescopic rod to perform hard sealing on the air inlet of the injection molding machine. However, the existing cylinder has poor accuracy when aligning and sealing with the air inlet of the injection molding machine. A lot of research has been carried out on this. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an air inlet valve for an injection molding machine, which can solve the problems in the above-mentioned prior art.

[0004] The utility model is realized by the following technical solutions: An air inlet valve for an injection molding machine of the utility model includes a single-acting cylinder. A telescopic rod is arranged inside the single-acting cylinder. A matching plate is further arranged on the outer surface of the single-acting cylinder. It is characterized in that a closed cylinder is arranged at the bottom of the telescopic rod. A chamfered surface is arranged on the outer surface of the bottom of the closed cylinder. A plugging cylinder is arranged at the bottom of the closed cylinder. A bottom-side chamfer is arranged on the outer surface of the bottom of the plugging cylinder. A plurality of through holes are arranged inside the plugging cylinder.

[0005] A further technical solution is that a bottom plate is arranged at the bottom of the matching plate. The telescopic rod slides through the bottom plate.

[0006] A further technical solution is that four mounting holes are arranged inside the matching plate.

[0007] A further technical solution is that four through holes are arranged.

[0008] A further technical solution is that the upper half of the through hole is semicircular and the lower half is rectangular.

[0009] A further technical solution is that the bottom-side chamfer inclines downward towards the center position of the plugging cylinder.

[0010] A further technical solution is that a top side plate is arranged at the top of the closed cylinder.

[0011] The beneficial effects of the present utility model are as follows: First, by providing a socket cylinder on the outer surface of the bottom of the closed cylinder, and a socket cylinder, a perforation and a bottom chamfer on one side of the closed cylinder, the closed cylinder can be rigidly and sealedly connected to the air inlet. The bottom chamfer plays a guiding role, facilitating the insertion of the socket cylinder into the air inlet. The perforation divides the socket cylinder into multiple independent parts, which can play a certain elastic guiding role. The chamfered surface can abut against the chamfer at the edge of the air inlet to improve the sealing effect. Brief Description of the Drawings

[0012] For ease of description, the present utility model will be described in detail by the following specific embodiments and accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of an air inlet valve for an injection molding machine according to the present utility model;

[0014] Figure 2 For Figure 1 the upward view structure diagram of the device in

[0015] Figure 3 For Figure 2 the schematic diagram at A in

[0016] Figure 4 It is a schematic diagram during the installation of the device;

[0017] In the figure, there are a mating plate 11, a single-acting cylinder 12, a telescopic rod 13, a closed cylinder 14, a top side plate 15, an air inlet hole 16, a mounting hole 17, a bottom plate 18, a perforation 21, a chamfered surface 22, a socket cylinder 23, a bottom chamfer 24, a fixed bracket 31, a bracket hole 32, and an air inlet 33. Detailed Description of the Specific Embodiment

[0018] As Figures 1 - 4 shown, the present utility model will be described in detail. For the convenience of narration, the following orientation regulations are made: The up-down, left-right, front-back directions mentioned below are consistent with the up-down, left-right, front-back directions of the projection relationship of Figure 1 itself. An air inlet valve for an injection molding machine according to the present utility model includes a single-acting cylinder 12. The single-acting cylinder 12 is a prior art. When air pressure is input into the single-acting cylinder, the air pressure pushes the piston to move. Since the sealing washer at the air outlet is pushed out of the annular groove, and at the same time, the sealing washer between the cylinder body and the piston separates them, the cylinder consumes a unidirectionally supplied air source. When the input air pressure is withdrawn, additional pressure accumulates outside the piston, resulting in a greater thrust, causing the cylinder to extend. At this time, the gas inside the piston can be discharged from the piston air inlet.

[0019] Advantageously, a telescopic push rod 13 is provided inside the single-acting cylinder 12, an air inlet hole 16 is provided on one side of the single-acting cylinder 12, and a mating plate 11 is further provided on the outer surface of the single-acting cylinder 12.

[0020] Advantageously, a bottom plate 18 is provided at the bottom of the mating plate 11, and the push rod 13 slides through the bottom plate 18.

[0021] Advantageously, four mounting holes 17 are provided inside the mating plate 11.

[0022] Advantageously, a closed cylinder 14 is provided at the bottom of the push rod 13, and a plug-in cylinder 23 is provided at the bottom of the closed cylinder 14.

[0023] Advantageously, a chamfered surface 22 is provided on the outer surface of the bottom of the closed cylinder 14.

[0024] Advantageously, a plurality of through holes 21 are provided inside the plug-in cylinder 23. There are four through holes 21. The upper half of the through hole 21 is semicircular, and the lower half is rectangular.

[0025] Advantageously, a bottom side chamfer 24 is provided on the outer surface of the bottom of the plug-in cylinder 23, and the bottom side chamfer 24 slopes downward toward the center position of the plug-in cylinder 23.

[0026] Advantageously, a top side plate 15 is provided at the top of the closed cylinder 14.

[0027] When installing the device, an air inlet 33 is provided in the injection molding device. Air enters through the air inlet 33. A fixing bracket 31 is provided at the air inlet 33. The whole device is installed on the fixing bracket 31. Using the bracket hole 32 in the fixing bracket 31, the mating plate 11 is fixed on one side of the fixing bracket 31, and the push rod 13 passes through the bracket hole 32.

[0028] The air inlet hole 16 is connected to a trachea in the external space. After the single-acting cylinder 12 works, the push rod 13 can perform telescopic movement inside the single-acting cylinder 12. Then, the closed cylinder 14, the chamfered surface 22 and the plug-in cylinder 23 can be inserted into the air inlet 33 to rigidly seal the air inlet 33.

[0029] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. An air inlet valve for an injection molding machine, comprising a single-acting cylinder (12), wherein a telescopic rod (13) is arranged inside the single-acting cylinder (12), and a matching plate (11) is also arranged on the outer surface of the single-acting cylinder (12), characterized in that: A closed tube (14) is provided at the bottom of the telescopic rod (13), a plug-in tube (23) is provided at the bottom of the closed tube (14), and a plurality of through holes (21) are provided in the plug-in tube (23).

2. The air inlet valve for an injection molding machine according to claim 1, characterized in that: The outer surface of the bottom of the sealing cylinder (14) is provided with a chamfered surface (22).

3. The air inlet valve for an injection molding machine according to claim 1, characterized in that: The outer surface of the bottom of the plug-in cylinder (23) is provided with a bottom chamfer (24).

4. The air inlet valve for an injection molding machine according to claim 1, characterized in that: A bottom plate (18) is provided at the bottom of the matching plate (11), and the telescopic rod (13) slides through the bottom plate (18).

5. The air inlet valve for an injection molding machine according to claim 1, characterized in that: Four mounting holes (17) are arranged in the matching plate (11).

6. The air inlet valve for an injection molding machine according to claim 1, characterized in that: The number of perforations (21) is four.

7. The air inlet valve for an injection molding machine according to claim 1, characterized in that: The upper half of the perforation (21) is semicircular, and the lower half is rectangular.

8. The air inlet valve for an injection molding machine according to claim 3, characterized in that: The bottom chamfer (24) is inclined downward toward the center of the inserting tube (23).

9. An air inlet valve for an injection molding machine according to any one of claims 1 to 8, characterized in that: A top side plate (15) is arranged on the top of the sealing cylinder (14).

Images