A needle valve type adjustable air cylinder

Abstract

The utility model provides a needle valve type adjustable air cylinder relates to injection mold hot runner system valve needle drive arrangement technical field, including cylinder body, the upper middle and lower three ends of cylinder body are connected with first sealing ring, second sealing ring and third sealing ring, the inside of cylinder body is inserted with piston, the outer surface of piston is connected with fourth sealing ring, the top of cylinder body is sleeved with cylinder cover, the bottom of cylinder cover is connected with fifth sealing ring, the top of cylinder cover is connected with hang needle screw, the top of hang needle screw is connected with anti -loose fastening screw, the top of anti -loose fastening screw is connected with adjustment tool. In the utility model, through the research and development of CM50 adjustable air cylinder, greatly simplify the tedious work of adjusting valve needle height. Without taking out the piston from the mold can be in situ operation, convenient, fast, accurate adjustment action is completed. The maintenance time is greatly shortened, and the production efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the technical field of valve needle drive device for hot runner system of injection mold, and in particular to a needle valve type adjustable cylinder. Background Technology

[0002] The valve needle drive device for the needle valve hot runner system currently lacks in-situ adjustment function in most similar products on the market. It requires removing the piston and valve needle from the mold for adjustment, which is inconvenient and time-consuming, and has always been an intangible cost factor. Utility Model Content

[0003] The purpose of this invention is to solve the problem that existing similar products do not have an in-situ adjustment function. Each time the valve needle height is adjusted, the piston and valve needle must be removed from the mold and then adjusted accordingly. This is inconvenient, time-consuming, and reduces the efficiency of injection molding production, thus increasing costs.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a needle valve type adjustable cylinder, comprising a cylinder body, wherein a first sealing ring, a second sealing ring, and a third sealing ring are respectively connected to the upper, middle, and lower ends of the cylinder body; a piston is inserted into the inside of the cylinder body; a fourth sealing ring is connected to the outer surface of the piston; a cylinder head is fitted onto the top of the cylinder body; a fifth sealing ring is connected to the bottom of the cylinder head; a needle screw is connected to the top of the cylinder head; an anti-loosening fastening screw is connected to the top of the needle screw; and an adjusting fixture is connected to the top of the anti-loosening fastening screw.

[0005] Furthermore, cylinder assembly fixing screws are connected to the four corners of the top of the cylinder head.

[0006] Furthermore, the first, second, and third sealing rings are all made of rubber, and each has an annular groove on its surface. The cylinder body has an annular protrusion that matches the annular groove at the contact point with each sealing ring.

[0007] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this invention, the development and molding of the CM50 adjustable cylinder greatly simplifies the tedious work of adjusting the valve needle height. In-situ operation is possible without removing the piston from the mold, enabling convenient, fast, and precise adjustment. This significantly reduces maintenance time and effectively improves production efficiency. Attached Figure Description

[0008] Figure 1 An exploded structural diagram of a needle valve type adjustable cylinder is provided for this utility model. Figure 2 A top view of the structure of a needle valve type adjustable cylinder is provided for this utility model. Figure 3 This utility model presents a cross-sectional structural diagram of a needle valve type adjustable cylinder.

[0009] Legend: 1. Cylinder block; 2. First sealing ring; 3. Second sealing ring; 4. Third sealing ring; 5. Piston; 6. Fourth sealing ring; 7. Cylinder head; 8. Fifth sealing ring; 9. Hanging pin screw; 10. Anti-loosening fastening screw; 11. Adjusting fixture; 12. Cylinder assembly fixing screw. Detailed Implementation

[0010] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0011] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0012] Examples, such as Figure 1 - Figure 3 As shown, this utility model provides a needle valve type adjustable cylinder, including a cylinder body 1. The upper, middle and lower ends of the cylinder body 1 are respectively connected to a first sealing ring 2, a second sealing ring 3 and a third sealing ring 4. A piston 5 is inserted into the inside of the cylinder body 1. A fourth sealing ring 6 is connected to the outer surface of the piston 5. A cylinder head 7 is fitted onto the top of the cylinder body 1. A fifth sealing ring 8 is connected to the bottom of the cylinder head 7. A needle screw 9 is connected to the top of the cylinder head 7. An anti-loosening fastening screw 10 is connected to the top of the needle screw 9. An adjusting fixture 11 is connected to the top of the anti-loosening fastening screw 10. Cylinder assembly fixing screws 12 are connected to the four corners of the top of the cylinder head 7. The first sealing ring 2, the second sealing ring 3 and the third sealing ring 4 are all made of rubber and each has an annular groove on its surface. The cylinder body 1 has an annular protrusion that matches the annular groove at the contact part with each sealing ring.

[0013] The effects achieved by the embodiments are as follows: Step 1: Use an Allen wrench to screw the adjusting fixture into the cylinder head and push the piston to the bottom limit surface of the cylinder block.

[0014] Step 2: Use an Allen wrench to turn the pin screw to the predetermined position.

[0015] Step 3: Use an Allen wrench to tighten the locking screw to the top of the pin screw until it can no longer be turned. At this point, the adjustment is complete.

[0016] Step 4: Use an Allen wrench to remove the adjustment fixture.

[0017] The piston 5 can be operated in place without being removed from the mold, allowing for convenient, fast, and precise adjustment.

[0018] Working principle: The development and molding of the CM50 adjustable cylinder greatly simplifies the tedious work of adjusting the valve needle height. In-situ operation is possible without removing the piston 5 from the mold, enabling convenient, fast, and precise adjustment. This significantly reduces maintenance time and effectively improves production efficiency.

[0019] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A needle valve type adjustable cylinder, comprising a cylinder body (1), characterized in that: The cylinder body (1) is connected to the upper, middle and lower ends by a first sealing ring (2), a second sealing ring (3) and a third sealing ring (4), respectively. A piston (5) is inserted inside the cylinder body (1). A fourth sealing ring (6) is connected to the outer surface of the piston (5). A cylinder head (7) is fitted onto the top of the cylinder body (1). A fifth sealing ring (8) is connected to the bottom of the cylinder head (7). A pin screw (9) is connected to the top of the cylinder head (7). An anti-loosening fastening screw (10) is connected to the top of the pin screw (9). An adjusting fixture (11) is connected to the top of the anti-loosening fastening screw (10).

2. The needle valve type adjustable cylinder according to claim 1, characterized in that: The cylinder head (7) is connected to cylinder assembly fixing screws (12) at the top four corners.

3. The needle valve type adjustable cylinder according to claim 1, characterized in that: The first sealing ring (2), the second sealing ring (3) and the third sealing ring (4) are all made of rubber and have annular grooves on their surfaces. The cylinder body (1) has annular protrusions that match the annular grooves at the contact points with each sealing ring.

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