An exhaust cylinder and an exhaust assembly

Abstract

The present invention relates to an exhaust cylinder and an exhaust assembly, wherein the exhaust cylinder includes a main body, a front cover and an exhaust rod, the front cover is sleeved on the main body and provided with a first channel, the exhaust rod is provided in the front cover, one end is connected to the main body, and the other end is located in the first channel, and slides along the first channel under the action of the main body, an exhaust gap is provided between the outer wall of the exhaust rod and the inner wall of the first channel, and a scraper groove is provided on the part of the exhaust rod located in the first channel; a concave residual material groove is provided in the inner wall of the first channel, and the scraper groove passes through the residual material groove during the movement stroke of the exhaust rod. Compared with the prior art, the present invention is designed with a residual material groove, so that the residual material is easy to fall off after being pushed out by the exhaust rod and is not easy to remain, thereby extending the service life of the exhaust modification, and the continuous pumping of the cylinder to remove the residual material on each mold is reduced from 4-5 times of the ordinary exhaust cylinder to 1-2 times.

Description

Technical Field

[0001] The invention relates to foaming process equipment, in particular to an exhaust cylinder and an exhaust component. Background Art

[0002] Parts that generate gas during foaming, micro-foaming or molding are widely used in many products around us. However, these gases are not conducive to product molding and will cause defects in product molding, such as dark bubbles, air-holding pits, key features that cannot be molded, etc., and even functions that cannot meet requirements. Therefore, exhaust is required at the air-holding position.

[0003] In the existing technology, the solution is to use an exhaust cylinder in the holding position. There is a problem in the use of exhaust cylinders in the automated production process, that is, the flash residue caused by the exhaust gap of the exhaust cylinder will remain in the front part of the exhaust rod. Even after the piston rod drives the exhaust rod in and out continuously for several times (4-5 times), the residue is still wrapped on the exhaust rod, which causes poor exhaust or exhaust failure, resulting in a slowdown in the production rhythm of parts, reduced production efficiency, and increased production costs. Summary of the Invention

[0004] The purpose of the present invention is to provide an exhaust cylinder and an exhaust assembly. By designing a residual material groove, the residual material can be easily fallen off after being pushed out by the exhaust rod and is not likely to remain, thereby extending the service life of the exhaust modification. The continuous pumping of the cylinder to remove residual material on each mold after production is reduced from 4-5 times of an ordinary exhaust cylinder to 1-2 times.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An exhaust cylinder comprises a main body, a front cover, and an exhaust rod, wherein the front cover is sleeved on the main body and is provided with a first channel, the exhaust rod is disposed within the front cover, one end of the exhaust rod is connected to the main body, the other end is located within the first channel, and slides along the first channel under the action of the main body, an exhaust gap is provided between the outer wall of the exhaust rod and the inner wall of the first channel, and a scraper groove is provided on the portion of the exhaust rod located within the first channel;

[0007] An inwardly concave residual material groove is provided in the inner wall of the first channel, and the scraping groove passes through the residual material groove during the movement of the exhaust rod.

[0008] The residual material trough is arranged in a circular shape around the inner wall of the first channel.

[0009] There are a plurality of scraper troughs arranged in sequence along the exhaust rod.

[0010] There are two scraper troughs in total.

[0011] The scraper troughs are arranged at equal intervals.

[0012] The recessed depth of the residual material groove gradually decreases from the side close to the main body to the outlet side.

[0013] The axial cross-section of the residual material trough is a triangle.

[0014] The axial cross section of the residual material trough is a quarter ellipse.

[0015] An exhaust assembly includes a front cover and an exhaust rod, wherein the front cover is provided with a first channel, one end of the exhaust rod is located in the first channel, and the other end is connected to a power source and slides along the first channel under the action of the power source, an exhaust gap is provided between an outer wall of the exhaust rod and an inner wall of the first channel, and a scraper groove is provided on the portion of the exhaust rod located in the first channel;

[0016] An inwardly concave residual material groove is provided in the inner wall of the first channel, and the scraping groove passes through the residual material groove during the movement of the exhaust rod.

[0017] The residual material trough is arranged in a circular shape around the inner wall of the first channel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The residual material groove is designed to make the residual material easy to fall off after being pushed out by the exhaust rod and not easy to remain, thereby extending the service life of the exhaust modification. The continuous pumping of the cylinder to remove the residual material after each mold is reduced from 4-5 times of the ordinary exhaust cylinder to 1-2 times.

[0020] 2. Increase the life of the exhaust cylinder, that is, reduce the maintenance frequency and reduce downtime.

[0021] 3. The exhaust cylinder is continuous and effective, which provides production rhythm, improves production efficiency and reduces production costs.

[0022] 4. The residual material groove is arranged in a circular shape around the inner wall of the first channel, which reduces the processing difficulty and increases the probability of residual material falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural diagram of an exhaust cylinder in the prior art;

[0024] Figure 2 is a schematic diagram of the exhaust gap;

[0025] Figure 3 It is a schematic diagram of the residual material in the prior art;

[0026] Figure 4 It is a structural schematic diagram of the present invention;

[0027] Figure 5 Schematic diagram of the residual material in an embodiment of the present invention;

[0028] Among them: 1. Scraper trough, 2. Front cover, 3. Exhaust rod, 4. Front cover, 5. Front air inlet and outlet, 6. Cylinder body, 7. Piston, 8. Piston rod, 9. Rear cover, 10. Rear air inlet and outlet, 11. Exhaust gap, 12. Residue, 13. Residue trough. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0030] like Figure 1 As shown, the existing exhaust cylinder includes a main body, a front cover 2 and an exhaust rod 3, wherein the main body includes a front cover 4, a front air inlet and outlet 5, a cylinder body 6, a piston 7, a piston 7 rod, a rear cover 9 and a rear air inlet and outlet 10;

[0031] Exhaust cylinder exhaust principle: before the material enters the mold cavity for molding, the exhaust cylinder is in a contraction state (the rightward movement direction in the figure is the contraction direction). Figure 2 As shown, an exhaust gap 11 is formed between the exhaust rod 3 and the front cover 2. The exhaust gap 11 is used to remove the gas generated during the molding process of the material in the mold, thereby avoiding quality problems of the parts in the mold caused by air holding. After the production of a part is completed, the exhaust rod 3 is in the ejection state, and the discharge chute is used to push out the residual material 12 in the gap.

[0032] In the existing technology, the exhaust of the first mold is often unobstructed, which can ensure that the air in the mold cavity is smoothly discharged. The secondary mold and the third mold often have the problem of poor exhaust. The reason is that the flash residue 12 caused by the exhaust gap 11 of the exhaust cylinder will remain in the front section of the exhaust rod 3. Even after the piston 7 drives the exhaust rod 3 in and out continuously for several times (4-5 times), the residue 12 is still wrapped on the exhaust rod 3, which causes poor exhaust or exhaust failure, resulting in quality problems of parts. The solution is to manually use a scouring pad to remove the residue 12 wrapped on the exhaust rod 3.

[0033] The inventors have found through research that the fundamental problem of the existing exhaust cylinder being unable to remove the residual material 12 is that Figure 3 As shown, the diameter of the residual material circle formed in the scraper trough 1 during the part molding process is equal to the inner hole diameter of the front section cover 2, that is, when the cylinder is retracted after pushing out the residual material 12, the residual material circle cannot be scraped on the inner hole mouth of the front section cover 2 to achieve the purpose of cleaning the residual material 12. The residual material 12 needs to be manually cleared when the cylinder is pushed out.

[0034] The present application provides an exhaust cylinder, such as Figure 4 and Figure 5As shown, it includes a main body, a front cover 2 and an exhaust rod 3. The front cover 2 is sleeved on the main body and is provided with a first channel. The exhaust rod 3 is arranged in the front cover 2, one end is connected to the main body, and the other end is located in the first channel, and slides along the first channel under the action of the main body. An exhaust gap 11 is provided between the outer wall of the exhaust rod 3 and the inner wall of the first channel, and a scraper groove 1 is provided on the part of the exhaust rod 3 located in the first channel; an inward-concave residual material groove 13 is provided in the inner wall of the first channel, and the scraper groove 1 passes through the residual material groove 13 during the movement stroke of the exhaust rod 3.

[0035] The exhaust cylinder body and Figure 1 The main body of the existing exhaust cylinder shown is the same as that shown in the figure. The improvement is made in the exhaust rod 3 and the front cover 2. A smooth slope groove is added to the inner wall of the front cover 2 as a residual material groove 13. The function is to form a residual material 12 brought in by the exhaust during the material forming process in this diameter-increasing groove. Figure 5 The diameter of the residual material ring shown is larger than the inner diameter of the front cover 2. At the end of the production of a part, the cylinder pushes the residual material 12 to the outside of the front cover 2. Because the diameter of this residual material ring is larger than the inner diameter of the front cover 2, it will be scraped and retained on the outside of the front cover 2, thereby cleaning the residual material 12 and preparing for the next mold.

[0036] Thereby, the front section residual material 12 of the exhaust rod 3 is automatically detached from the exhaust rod 3 after the cylinder enters and exits several times, for example 2-3 times, without the need for manual cleaning, thereby ensuring that the exhaust gap 11 is effective.

[0037] In this embodiment, the exhaust cylinder is fixed to the mold body that needs to be exhausted through the external threads of the front cover 2, and the top of the front cover 2 is flush with the inner cavity of the mold.

[0038] In this embodiment, the residual material groove 13 is arranged in a circular shape around the inner wall of the first channel, which reduces the processing difficulty and increases the probability of the residual material 12 falling off.

[0039] There are a plurality of scraper troughs 1, which are arranged in sequence along the exhaust rod 3, reducing the processing difficulty and increasing the probability of the residual material 12 falling off. There are a total of 2 scraper troughs 1. In the scheme of 3 or more scraper troughs, the scraper troughs 1 are arranged at equal intervals.

[0040] The recessed depth of the residual material groove 13 gradually decreases from the main body side to the outlet side. In some embodiments, the axial cross-section of the residual material groove 13 is triangular, and in other embodiments, the axial cross-section of the residual material groove 13 is a quarter ellipse.

[0041] Another embodiment of the present application is to provide an exhaust component, which is implemented as a part of the exhaust cylinder, including a front cover 2 and an exhaust rod 3. The front cover is provided with a first channel, one end of the exhaust rod 3 is located in the first channel, and the other end is connected to a power source, and slides along the first channel under the action of the power source. An exhaust gap 11 is provided between the outer wall of the exhaust rod 3 and the inner wall of the first channel, and a scraper groove 1 is provided on the part of the exhaust rod 3 located in the first channel; an inward-concave residual material groove 13 is provided in the inner wall of the first channel, and during the movement stroke of the exhaust rod 3, similarly, the scraper groove 1 passes through the residual material groove 13, and the residual material groove 13 is arranged in a circular shape around the inner wall of the first channel, thereby reducing the processing difficulty and increasing the probability of the residual material 12 falling off.

Claims

1. An exhaust cylinder, comprising a main body, a front cover, and an exhaust rod, wherein the front cover is sleeved on the main body and is provided with a first channel, the exhaust rod is disposed within the front cover, one end of the exhaust rod is connected to the main body, the other end of the exhaust rod is located within the first channel, and the exhaust rod slides along the first channel under the action of the main body, an exhaust gap is provided between the outer wall of the exhaust rod and the inner wall of the first channel, and a scraper groove is provided on the portion of the exhaust rod located within the first channel; It is characterized in that An inwardly concave residual material groove is provided in the inner wall of the first channel, and the scraping groove passes through the residual material groove during the movement of the exhaust rod.

2. An exhaust cylinder according to claim 1, characterized in that: The residual material trough is arranged in a circular shape around the inner wall of the first channel.

3. The exhaust cylinder according to claim 1, characterized in that: There are a plurality of scraper troughs arranged in sequence along the exhaust rod.

4. The exhaust cylinder according to claim 1, characterized in that: There are two scraper troughs in total.

5. The exhaust cylinder according to claim 1, characterized in that: The scraper troughs are arranged at equal intervals.

6. The exhaust cylinder according to claim 1, characterized in that: The recessed depth of the residual material groove gradually decreases from the side close to the main body to the outlet side.

7. The exhaust cylinder according to claim 6, characterized in that: The axial cross-section of the residual material trough is a triangle.

8. The exhaust cylinder according to claim 7, characterized in that: The axial cross section of the residual material trough is a quarter ellipse.

9. An exhaust assembly, comprising a front cover and an exhaust rod, wherein the front cover is provided with a first channel, one end of the exhaust rod is located in the first channel, the other end of the exhaust rod is connected to a power source and slides along the first channel under the action of the power source, an exhaust gap is defined between an outer wall of the exhaust rod and an inner wall of the first channel, and a scraper groove is defined on the portion of the exhaust rod located in the first channel; It is characterized in that An inwardly concave residual material groove is provided in the inner wall of the first channel, and the scraping groove passes through the residual material groove during the movement of the exhaust rod.

10. An exhaust assembly according to claim 9, characterized in that: The residual material trough is arranged in a circular shape around the inner wall of the first channel.

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