A gas loss prevention roof structure

Abstract

This utility model belongs to the technical field of mold auxiliary components, and particularly relates to an anti-detachment air ejector structure, including an air ejector body, an air ejector core, and a top cover. A positioning groove is provided at the lower part of the air ejector body. The top cover is slidably placed in the upper part of the air ejector body, and a threaded air groove is provided on the surface of the top cover. The air ejector core is fixedly connected to the bottom of the top cover, and an exhaust gap is left between the outer wall of the air ejector core and the inner wall of the air ejector body. This utility model, by providing a through-type threaded air groove on the surface of the top cover, guides gas to exit efficiently and reduces the contact area between the top cover and the inner wall of the air ejector body, effectively mitigating the risk of pin jamming. Simultaneously, by providing a threaded section at the bottom of the air ejector core and using a detachable nut, the air ejector core is detachably confined inside the air ejector body. When the air ejector core becomes stuck due to thermal expansion, it can be quickly removed and replaced simply by loosening the nut, significantly reducing maintenance costs and shortening downtime.

Description

Technical Field

[0001] This utility model belongs to the technical field of mold auxiliary components, and in particular relates to an anti-air ejection top structure. Background Technology

[0002] A gas ejector is a commonly used device in mold design, primarily using gas pressure to drive the opening and closing of the mold. Its working principle involves applying force to a piston using air pressure, thereby achieving mold separation and closure. Gas ejectors offer advantages such as simple structure, convenient operation, and high efficiency, and are widely used in manufacturing to improve production efficiency and reduce process complexity.

[0003] Currently, the air ejectors commonly used in domestic molds generally adopt an interference fit method, which is fixed by pressing them tightly into the mold mounting holes. However, under high temperature conditions, the air ejector core is prone to jamming with the inner wall of the air ejector body due to thermal expansion, resulting in the inability to eject normally. The existing air ejectors and air ejector core adopt a closed and non-removable structure, which requires the entire unit to be replaced when jamming occurs, which not only increases maintenance costs but also prolongs downtime.

[0004] Therefore, there is a particular need for an anti-detachment vent structure to solve the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of existing air caps, which are characterized by a closed and non-removable structure and are prone to jamming at high temperatures, resulting in high maintenance costs and long downtime, this utility model provides an anti-detachment air cap structure.

[0006] This utility model is achieved through the following technical means: an anti-detachment air top structure, including an air top body, an air top core, a threaded section, a top cover, a nut, and a spring. The lower part of the air top body is provided with a positioning groove. The top cover is slidably placed in the upper part of the air top body. The surface of the top cover is provided with a threaded air groove. The air top core is fixedly connected to the bottom of the top cover. An exhaust gap is left between the outer wall of the air top core and the inner wall of the air top body. The bottom end of the air top core is fixedly connected with a threaded section. A nut is threaded on the threaded section. A spring is sleeved on the outside of the air top core. The upper and lower ends of the spring abut against the inner wall of the air top body and the top of the nut, respectively.

[0007] In a preferred embodiment of the present invention, the positioning groove extends to the bottom of the air top body.

[0008] In a preferred embodiment of the present invention, the threaded air groove extends from the bottom of the top cover to the top of the top cover.

[0009] In a preferred embodiment of this utility model, the nut is a non-slip nut.

[0010] In a preferred embodiment of this utility model, the bottom surface of the nut is at a height higher than the bottom end of the threaded section.

[0011] In a preferred embodiment of this utility model, the spring is only sleeved on the outside of the gas cap core and is not fixedly connected to the gas cap core, the gas cap body and the nut.

[0012] Beneficial effects: This utility model, by opening a through-type threaded air groove on the surface of the top cover, not only guides the gas to be discharged efficiently, but also reduces the contact area between the top cover and the inner wall of the air cap body, effectively alleviating the risk of pin jamming. At the same time, by setting a threaded section at the bottom of the air cap core and cooperating with a detachable nut, the air cap core is detachably confined inside the air cap body. When the air cap core jams due to thermal expansion, it can be quickly removed and replaced simply by loosening the nut, significantly reducing maintenance costs and shortening downtime. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a three-dimensional structural diagram of the components of this utility model, including the air top body, positioning groove, and top cover.

[0015] Figure 3 This utility model Figure 1 Exploded structure diagram.

[0016] Figure 4 This is a partial sectional view of the gas cap body and nut component of this utility model.

[0017] The components in the attached diagram are labeled as follows: 1. Air cap body, 101. Positioning groove, 2. Air cap core, 201. Threaded section, 3. Top cover, 301. Threaded air groove, 4. Nut, 5. Spring. Detailed Implementation

[0018] Example: An anti-detachment cap structure, such as Figures 1-4As shown, the device includes an air-cushion body 1, an air-cushion core 2, a threaded section 201, a top cover 3, a nut 4, and a spring 5. The air-cushion body 1 has a positioning groove 101 at its lower part, extending to the bottom of the air-cushion body 1. A top cover 3 is slidably placed inside the upper part of the air-cushion body 1. A threaded air groove 301 is formed on the surface of the top cover 3, extending from the bottom to the top of the top cover 3 to ensure smooth gas flow into the threaded air groove 301 and reduce the contact area between the top cover 3 and the air-cushion body 1. The air-cushion core 2 is fixedly connected to the bottom of the top cover 3. A drainage channel is left between the outer wall of the air-cushion core 2 and the inner wall of the air-cushion body 1. The air gap has a threaded section 201 fixedly connected to the bottom of the air core 2. A nut 4 is threaded on the threaded section 201. The nut 4 is an anti-slip nut to prevent loosening under vibration or air pressure impact. The bottom of the nut 4 is higher than the bottom of the threaded section 201 to ensure that the nut 4 is fully tightened. A spring 5 is sleeved on the outside of the air core 2. The upper and lower ends of the spring 5 abut against the inner wall of the air body 1 and the top of the nut 4, respectively, to provide a restoring force for the air core 2 and the top cover 3. The spring 5 is only sleeved on the outside of the air core 2 and is not fixedly connected to the air core 2, the air body 1 and the nut 4, so it does not affect the independent disassembly of the air core 2.

[0019] In use, align the air ejector body 1 with the mold mounting hole through the positioning groove 101 and tap it lightly to quickly install it in place. When compressed gas enters the air ejector body 1, the gas pushes the top cover 3 upward, causing the air ejector core 2 to be ejected synchronously. The spring 5 is compressed accordingly, thereby realizing the functions of exhaust and auxiliary ejection. At the same time, some gas enters the threaded air groove 301 on the surface of the top cover 3 through the exhaust gap and is discharged upward along the threaded air groove 301. This not only accelerates the exhaust but also reduces the contact area between the top cover 3 and the inner wall of the air ejector body 1, effectively reducing the risk of pin jamming. When the mold operates under high temperature conditions, causing the air ejector core 2 to become stuck due to thermal expansion, there is no need to disassemble the mold or replace the whole thing. The operator only needs to loosen the nut 4 downward to disengage it from the threaded section 201, and then the air ejector core 2 can be taken out upward for replacement. After replacement, tighten the nut 4 upward to restore use. The entire maintenance process does not require mold disassembly and is easy to operate.

Claims

1. A structure for preventing air detachment from the top, characterized in that, It includes an air top body (1), an air top core (2), a threaded section (201), a top cover (3), a nut (4), and a spring (5). The air top body (1) has a positioning groove (101) at the bottom. The top cover (3) is slidably placed inside the upper part of the air top body (1). The surface of the top cover (3) has a threaded air groove (301). The bottom of the top cover (3) is fixedly connected to the air top core (2). There is an exhaust gap between the outer wall of the air top core (2) and the inner wall of the air top body (1). The bottom end of the air top core (2) is fixedly connected to the threaded section (201). The threaded section (201) is threaded with a nut (4). The air top core (2) is sleeved with a spring (5). The upper and lower ends of the spring (5) abut against the inner wall of the air top body (1) and the top of the nut (4), respectively.

2. The anti-detachment vent structure according to claim 1, characterized in that, The positioning groove (101) extends to the bottom of the air top body (1).

3. The anti-detachment vent structure according to claim 2, characterized in that, The threaded air groove (301) extends from the bottom of the top cover (3) to the top of the top cover (3).

4. The anti-detachment vent structure according to claim 3, characterized in that, Nut (4) Use anti-slip nuts.

5. The anti-detachment vent structure according to claim 4, characterized in that, The bottom surface of the nut (4) is at a height higher than the bottom of the thread section (201).

6. The anti-detachment vent structure according to claim 5, characterized in that, The spring (5) is only sleeved on the outside of the air cap core (2) and is not fixedly connected to the air cap core (2), the air cap body (1) and the nut (4).

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