Less residual material blowing cylinder

Abstract

The present application relates to a low-residue blowing cylinder, wherein a piston rod is movably provided inside the cylinder body, a piston ring is provided at one end of the piston rod, a liquid cylinder is provided on one side of the cylinder body, a liquid cavity is provided in the liquid cylinder, a first movable valve is movably provided inside the liquid cavity, a first sealing rod is provided on one side of the first movable valve, an injection port is provided on one side of the internal part of the liquid cylinder, the injection port is communicated with the interior of the cylinder body, a pneumatic cylinder is provided on the other side of the cylinder body, an air cavity is provided in the pneumatic cylinder, an injection port is provided on one side of the pneumatic cylinder, a second movable valve is movably installed inside the air cavity, and a second sealing rod is installed on one side of the second movable valve. In actual use, the utility model adopts a combination of gas blowing and piston rod. This combined cleaning method can achieve thorough cleaning of polyurethane injection molding residues and effectively avoid problems such as residue blockage and uneven quality.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane injection molding, in particular to a small-residue blowing cylinder. Background Art

[0002] In the existing polyurethane injection molding process, the blow cylinder, as a key component, has a significant impact on improving production efficiency and product quality. At present, the mainstream blow cylinders on the market mostly use a single cleaning structure, such as simply relying on gas to blow out the residual material. However, this structure often has the problem of incomplete cleaning of residual materials during the cleaning process, resulting in defects such as blockage and uneven quality during the subsequent injection molding process. In addition, for polyurethane materials with higher viscosity, a single cleaning method has a more limited effect and cannot meet the needs of efficient and high-precision production. Utility Model Content

[0003] The utility model aims to provide a blowing cylinder with less residual material to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a low-residue blowing cylinder, comprising a cylinder body, a liquid cylinder and a pneumatic cylinder, a piston rod is movably arranged inside the cylinder body, a piston ring is arranged at one end of the piston rod, a liquid cylinder is arranged on one side of the cylinder body, a liquid cavity is arranged in the liquid cylinder, a first oil filling port is arranged on one side of the top of the liquid cylinder, and a second oil filling port is arranged on the other side of the top of the liquid cylinder, a first movable valve is movably arranged inside the liquid cavity, a first sealing rod is arranged on one side of the first movable valve, a material filling port is arranged on one side of the interior of the liquid cylinder, the material filling port is communicated with the interior of the cylinder body, a pneumatic cylinder is arranged on the other side of the cylinder body, an air cavity is arranged in the pneumatic cylinder, a clearing air nozzle is arranged at the bottom of the pneumatic cylinder, a return air nozzle is arranged on the top of the pneumatic cylinder, a material filling port is arranged on one side of the pneumatic cylinder, a second movable valve is movably installed inside the air cavity, and a second sealing rod is installed on one side of the second movable valve.

[0005] When in use, the injection port is connected to an external polyurethane raw material source, and the polyurethane raw material enters the cylinder body from the injection port. When the injection operation is in progress, the hydraulic oil enters the liquid cavity from the second oil injection port, and the first movable valve is pushed to the right, and the hydraulic oil on one side of the first movable valve is extracted through the first oil injection port, so that the first sealing rod moves to the right inside the cylinder body. At this time, the injection port is connected with the cylinder body, and the external air source synchronously enters the air cavity from the driving air nozzle, pushing the second movable valve to the right, so that the second sealing rod moves to the right, blocking one side of the cylinder body, and blocking the connection between the cylinder body and the cleaning air nozzle. At this time, the polyurethane raw material coming out of the injection port can enter the cylinder body, and be injected to the designated position through the bottom end of the cylinder body to complete the injection process;

[0006] When the injection operation is completed, the hydraulic oil enters the interior of the liquid cavity from the first oil filling port, pushes the first movable valve to the left, and the hydraulic oil on one side of the first movable valve is extracted through the second oil filling port, so that the first sealing rod moves to the left inside the cylinder body, and the injection port is blocked by the first sealing rod, and the external air source simultaneously enters the air cavity from the return air nozzle, pushes the second movable valve to the left, so that the second sealing rod moves to the left. At this time, the cylinder body is connected with the cleaning air nozzle, and the external high-pressure air source can enter the interior of the cylinder body from the cleaning air nozzle to blow out the polyurethane residual material inside the cylinder body. When the blowing is finished, the second sealing rod is controlled to move to the right in the above manner to block the connection between the cleaning air nozzle and the cylinder body. At this time, the staff operates the piston rod to reciprocate in the cylinder body, and pokes out the residual material attached to the inner wall of the cylinder body by mechanical force, and completely removes the remaining stubborn residual material;

[0007] In actual use, the gas blowing and piston rod are used in combination. This combined cleaning method can achieve thorough cleaning of polyurethane injection molding residues, effectively avoiding problems such as residue blockage and uneven quality.

[0008] Preferably, the first oil filling port and the second oil filling port are connected to the liquid cavity.

[0009] Because the first oil filling port and the second oil filling port are connected to the liquid cavity, the hydraulic oil can enter the liquid cavity from the first oil filling port and the second oil filling port. When the hydraulic oil enters from the first oil filling port, it pushes the first movable valve to the left, and when the hydraulic oil enters from the second oil filling port, it pushes the first movable valve to the right.

[0010] Preferably, a sealing ring is used to seal the liquid chamber and the cylinder body, the first sealing rod extends into the cylinder body, and the first sealing rod movably passes through the sealing ring.

[0011] Because there is a sealing ring between the liquid cavity and the cylinder body for sealing, it is ensured that when the hydraulic oil enters the liquid cavity, it can push the position of the first movable valve and will not penetrate into the cylinder body.

[0012] Preferably, the return air nozzle and the drive air nozzle are connected to the air cavity, and the cleaning air nozzle is connected to the inside of the cylinder body.

[0013] Gas can enter the interior of the air cavity through the return air nozzle. When gas enters from the return air nozzle, it can push the second movable valve to the left, so that the second sealing rod moves to the left. When gas enters from the driving air nozzle, it will push the second movable valve to the right, so that the second sealing rod moves to the right. When the second sealing rod moves to the right, it will block the connection between the cleaning air nozzle and the cylinder body. When the second sealing rod moves to the left, the cleaning air nozzle and the cylinder body are connected, so that gas can enter the interior of the cylinder body from the cleaning air nozzle.

[0014] Preferably, a sealing ring is used to seal the air cavity and the cylinder body, one end of the second sealing rod extends into the interior of the cylinder body, and the second sealing rod movably passes through the sealing ring.

[0015] Since a sealing ring is provided between the air cavity and the cylinder body for sealing, it is ensured that the gas enters the air cavity and the moving position of the second sealing rod can be adjusted.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] When the utility model is actually used, an external high-pressure gas source can enter the interior of the cylinder body from the cleaning air nozzle to blow out the polyurethane residual material inside the cylinder body. When the blowing is finished, the second sealing rod is controlled to move to the right in the above-mentioned manner to block the connection between the cleaning air nozzle and the cylinder body. At this time, the staff operates the piston rod to reciprocate in the cylinder body, and the residual material attached to the inner wall of the cylinder body is poked out by mechanical force, and the remaining stubborn residual material is completely removed. The combination of gas blowing and piston rod is used, and this combined cleaning method can achieve thorough cleaning of polyurethane injection molding residual material, and effectively avoid problems such as residual material blockage and uneven quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is a schematic diagram of the movement of the first movable valve and the second movable valve of the utility model.

[0020] In the figure: 1. Cylinder body; 101. Piston rod; 102. Piston ring; 2. Liquid cylinder; 201. Liquid cavity; 202. First oil filling port; 203. Second oil filling port; 3. First movable valve; 301. First sealing rod; 4. Filling port; 5. Pneumatic cylinder; 501. Air cavity; 502. Clearing air nozzle; 503. Return air nozzle; 504. Driving air nozzle; 6. Second movable valve; 601. Second sealing rod. DETAILED DESCRIPTION

[0021] The following specific embodiments are provided to help the reader obtain a comprehensive understanding of the methods, devices and / or systems described herein. However, after understanding the disclosure of the present application, various changes, modifications and equivalents of the methods, devices and / or systems described herein will be apparent. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but in addition to the operations that must occur in a particular order, changes that will be apparent after understanding the disclosure of the present application may be made. In addition, in order to improve clarity and brevity, descriptions of features known in the art may be omitted.

[0022] The features described herein may be implemented in different forms and should not be interpreted as being limited to the examples described herein. Rather, the examples described herein have been provided only to illustrate some of the many possible ways of implementing the methods, devices and / or systems described herein that will be apparent after understanding the disclosure of the present application.

[0023] Throughout the specification, when an element (such as a layer, a region, or a substrate) is described as being “on”, “connected to”, “bound to”, “over”, or “covering” another element, it may be directly “on”, “connected to”, “bound to”, “over”, or “covering” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on”, “directly connected to”, “directly bound to”, “directly over”, or “directly covering” another element, there may be no other elements present between them.

[0024] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0025] Although terms such as "first", "second", and "third" may be used herein to describe various components, assemblies, regions, layers, or portions, these components, assemblies, regions, layers, or portions are not limited by these terms. Rather, these terms are only used to distinguish one component, component, region, layer, or portion from another component, component, region, layer, or portion. Therefore, without departing from the teachings of the examples described herein, the first component, component, region, layer, or portion referred to may also be referred to as the second component, component, region, layer, or portion.

[0026] For ease of description, spatial relative terms such as "above", "upper", "below", and "lower" may be used herein to describe the relationship of one element to another element as shown in the drawings. Such spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, an element described as being "above" or "upper" relative to another element would then be located "below" or "lower" relative to the other element.

[0027] Therefore, the term "above" includes both "above" and "below" orientations depending on the spatial orientation of the device. The device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative terms used herein will be interpreted accordingly.

[0028] The terms used herein are only used to describe various examples and are not used to limit the present disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms "include", "comprise" and "have" list the stated features, quantities, operations, components, elements and / or their combinations that exist, but do not exclude the existence or addition of one or more other features, quantities, operations, components, elements and / or their combinations.

[0029] Variations in the shapes shown in the drawings may occur due to manufacturing techniques and / or tolerances. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include variations in shapes that occur during manufacturing.

[0030] The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, it will be apparent after understanding the disclosure of the present application that other configurations are possible.

[0031] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] Embodiment 1

[0033] like Figure 1 , Figure 2 As shown, the low-residue blowing cylinder proposed by the utility model comprises a cylinder body 1, a liquid cylinder 2 and a pneumatic cylinder 5, wherein a piston rod 101 is movably arranged inside the cylinder body 1, a piston ring 102 is arranged at one end of the piston rod 101, a liquid cylinder 2 is arranged on one side of the cylinder body 1, a liquid cavity 201 is arranged inside the liquid cylinder 2, a first oil injection port 202 is arranged on one side of the top of the liquid cylinder 2, and a second oil injection port 203 is arranged on the other side of the top of the liquid cylinder 2, a first movable valve 3 is movably arranged inside the liquid cavity 201, and the first movable valve 3 A first sealing rod 301 is provided on one side of 3, a material injection port 4 is provided on one side of the inner part of the liquid cylinder 2, and the material injection port 4 is communicated with the inner part of the cylinder body 1, a pneumatic cylinder 5 is provided on the other side of the cylinder body 1, an air cavity 501 is provided in the pneumatic cylinder 5, a clearing air nozzle 502 is provided at the bottom of the pneumatic cylinder 5, a return air nozzle 503 is provided at the top of the pneumatic cylinder 5, a material injection port 4 is provided on one side of the pneumatic cylinder 5, a second movable valve 6 is movably installed inside the air cavity 501, and a second sealing rod 601 is installed on one side of the second movable valve 6.

[0034] The working principle of the low-residue blowing cylinder based on the first embodiment is: when in use, the injection port 4 is connected to the external polyurethane raw material source, and the polyurethane raw material enters the cylinder body 1 from the injection port 4. When the injection operation is in progress, the hydraulic oil enters the liquid cavity 201 from the second oil injection port 203, and the first movable valve 3 is pushed to the right, and the hydraulic oil on one side of the first movable valve 3 is extracted through the first oil injection port 202, so that the first sealing rod 301 moves to the right inside the cylinder body 1. At this time, the injection port 4 is connected with the cylinder body 1, and the external air source synchronously enters the air cavity 501 from the driving air nozzle 504, and the second movable valve 6 is pushed to the right, so that the second sealing rod 601 moves to the right, and one side of the cylinder body 1 is blocked, and the connection between the cylinder body 1 and the cleaning air nozzle 502 is blocked. At this time, the polyurethane raw material coming out of the injection port 4 can enter the cylinder body 1, and be injected to the designated position through the bottom end of the cylinder body 1 to complete the injection process;

[0035] When the injection operation is completed, the hydraulic oil enters the liquid chamber 201 from the first oil injection port 202, pushing the first movable valve 3 to the left, and the hydraulic oil on one side of the first movable valve 3 is extracted through the second oil injection port 203, so that the first sealing rod 301 moves to the left inside the cylinder body 1, and the injection port 4 is blocked by the first sealing rod 301, and the external air source simultaneously enters the air chamber 501 from the return air nozzle 503, pushing the second movable valve 6 to the left, so that the second sealing rod 601 moves to the left. When the cylinder body 1 is connected with the cleaning nozzle 502, the external high-pressure gas source can enter the cylinder body 1 through the cleaning nozzle 502 to blow out the polyurethane residue in the cylinder body 1. When the blowing is finished, the second sealing rod 601 is controlled to move rightward in the above manner to block the connection between the cleaning nozzle 502 and the cylinder body 1. At this time, the staff operates the piston rod 101 to reciprocate in the cylinder body 1, and the residue attached to the inner wall of the cylinder body 1 is poked out by mechanical force, and the remaining stubborn residue is completely removed;

[0036] In actual use, the gas blowing is combined with the piston rod 101. This combined cleaning method can achieve thorough cleaning of polyurethane injection molding residues and effectively avoid problems such as residue blockage and uneven quality.

[0037] Embodiment 2

[0038] like Figure 1 , Figure 2As shown, the low-residue blowing cylinder proposed by the utility model, compared with the first embodiment, this embodiment also includes: the first oil filling port 202 and the second oil filling port 203 are connected with the liquid cavity 201, the liquid cavity 201 and the cylinder body 1 are sealed with a sealing ring, the first sealing rod 301 extends into the cylinder body 1, and the first sealing rod 301 movably passes through the sealing ring, the return air nozzle 503 and the drive air nozzle 504 are connected with the air cavity 501, the cleaning air nozzle 502 is connected with the inside of the cylinder body 1, the air cavity 501 and the cylinder body 1 are sealed with a sealing ring, one end of the second sealing rod 601 extends to the inside of the cylinder body 1, and the second sealing rod 601 movably passes through the sealing ring.

[0039] In this embodiment, Figure 1 , Figure 2 As shown, since the first oil filling port 202 and the second oil filling port 203 are connected with the liquid cavity 201, the hydraulic oil can enter the liquid cavity 201 from the first oil filling port 202 and the second oil filling port 203. When the hydraulic oil enters from the first oil filling port 202, the first movable valve 3 is pushed to the left, and when the hydraulic oil enters from the second oil filling port 203, the first movable valve 3 is pushed to the right; Figure 1 , Figure 2 As shown, since there is a sealing ring between the liquid cavity 201 and the cylinder body 1, it is ensured that when the hydraulic oil enters the liquid cavity 201, it can push the position of the first movable valve 3 and will not penetrate into the cylinder body 1; Figure 1 , Figure 2 As shown, the gas can enter the interior of the air cavity 501 from the return air nozzle 503. When the gas enters from the return air nozzle 503, the second movable valve 6 can be pushed to the left, so that the second sealing rod 601 moves to the left. When the gas enters from the driving air nozzle 504, the second movable valve 6 will be pushed to the right, so that the second sealing rod 601 moves to the right. When the second sealing rod 601 moves to the right, the connection between the cleaning air nozzle 502 and the cylinder body 1 is blocked. When the second sealing rod 601 moves to the left, the cleaning air nozzle 502 is connected to the cylinder body 1, so that the gas enters the interior of the cylinder body 1 from the cleaning air nozzle 502; Figure 1 , Figure 2 As shown, since there is a sealing ring between the air cavity 501 and the cylinder body 1 for sealing, it is ensured that the gas enters the air cavity 501 and the moving position of the second sealing rod 601 can be adjusted.

[0040] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A small amount of residual material blowing cylinder, comprising a cylinder body (1), a liquid cylinder (2) and a pneumatic cylinder (5), characterized in that: A piston rod (101) is movably provided inside the cylinder body (1), and a piston ring (102) is provided at one end of the piston rod (101). A liquid cylinder (2) is provided on one side of the cylinder body (1), and a liquid cavity (201) is provided inside the liquid cylinder (2). A first oil injection port (202) is provided on one side of the top of the liquid cylinder (2), and a second oil injection port (203) is provided on the other side of the top of the liquid cylinder (2). A first movable valve (3) is movably provided inside the liquid cavity (201), and a first sealing rod (301) is provided on one side of the first movable valve (3). The liquid cylinder (2 ) is provided with a material injection port (4) on one side of its interior, the material injection port (4) being communicated with the interior of the cylinder body (1), a pneumatic cylinder (5) is provided on the other side of the cylinder body (1), an air cavity (501) is provided in the pneumatic cylinder (5), a clearing air nozzle (502) is provided at the bottom of the pneumatic cylinder (5), a return air nozzle (503) is provided at the top of the pneumatic cylinder (5), a material injection port (4) is provided on one side of the pneumatic cylinder (5), a second movable valve (6) is movably installed inside the air cavity (501), and a second sealing rod (601) is installed on one side of the second movable valve (6).

2. The little residue blowing cylinder according to claim 1 is characterized in that: The first oil injection port (202) and the second oil injection port (203) are in communication with the liquid chamber (201).

3. The little residual material blowing cylinder according to claim 1 is characterized in that: A sealing ring is used to seal between the liquid chamber (201) and the cylinder body (1); the first sealing rod (301) extends into the cylinder body (1), and the first sealing rod (301) movably penetrates the sealing ring.

4. The little residual material blowing cylinder according to claim 1, characterized in that: The return air nozzle (503) and the drive air nozzle (504) are in communication with the air cavity (501), and the cleaning air nozzle (502) is in communication with the interior of the cylinder body (1).

5. The little residual material blowing cylinder according to claim 1 is characterized in that: A sealing ring is used to seal the air cavity (501) and the cylinder body (1); one end of the second sealing rod (601) extends into the interior of the cylinder body (1), and the second sealing rod (601) movably passes through the sealing ring.

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