KR102224318B1 - Device for extracting hose - Google Patents

Abstract

The present invention relates to a hose extraction device for extracting a hose from a mandrel, comprising: a body unit having a hollow unit through which the hose can be drawn in on the inside; and a clamping unit provided movably in the inner hollow unit of the body unit, and having a tubular nipple member insertable between the mandrel and the hose. When the nipple member is in the protruding position, the hose is insertion-fixed between the outside of the nipple member and the inside of the body unit.

Description

Hose extraction device {DEVICE FOR EXTRACTING HOSE}

The present invention relates to a hose extraction apparatus, and more particularly, to a hose extraction apparatus for extracting a hose from a mandrel after a vulcanization process of a molded rubber hose.

Rubber hoses are used for fluid transfer in various industrial fields including automobiles. These rubber hoses are machined into a specific curved shape according to the shape of the space to be installed or other requirements.

The general rubber hose manufacturing process is as follows. First, a straight rubber hose in an unvulcanized state is made through an extruder, and a straight rubber hose in an unvulcanized or semi-vulcanized state is inserted into a metal mandril mold having a specific shape.

Thereafter, the unvulcanized/semi-vulcanized rubber hose in the state of being inserted into the mandrel is placed in a vulcanization (vulcanization) chamber and the vulcanization process is performed under high temperature and high pressure, thereby manufacturing a rubber hose having the same specific shape as the mandrel mold.

When the curing process is completed, it is necessary to remove the molded rubber hose with high elasticity and high friction from the bent metal mandrel.

To this end, workers usually pull out the hose by grasping and pulling the outside of the rubber hose by hand, and this manual extraction requires considerable labor intensity. As a result, the fatigue of the worker increases, and various musculoskeletal disorders may occur.

In order to solve this problem, automation devices or other technologies for extracting rubber hoses have been developed, but there are still many disadvantages in terms of workability, economy, and efficiency (see Patent Document 1 and Patent Document 2).

Therefore, there is a need for a hose extraction device capable of easily responding to the shape of various mandrels or rubber hoses, which can be conveniently used by an operator, and that can be easily removed from the mandrel.

Republic of Korea Patent Publication No. 10-1321062 (2013. 10. 23. Announcement) Republic of Korea Patent Publication No. 10-2019-0096720 (published on August 20, 2019)

The technical problem to be achieved by the present invention is to provide a hose extraction device for extracting a hose from a mandrel after a vulcanization process of a molded rubber hose.

In particular, the present invention is to provide a hose extraction device that can easily respond to the shape of various mandrels or rubber hoses, can be conveniently used by an operator, and can easily remove a hose from a mandrel.

The technical problem to be achieved by the present invention is not limited to the technical problems mentioned above, and other technical problems that are not mentioned can be clearly understood by those of ordinary skill in the technical field to which the present invention belongs from the following description. There will be.

In order to achieve the above technical problem, an embodiment of the present invention is a hose extraction device for extracting a hose from a mandrel, a body portion provided inside a hollow portion through which the hose can be inserted, and an inner hollow portion of the body portion It is provided to be movable in, and includes a clamping portion having a tubular nipple member that can be inserted between the mandrel and the hose, and when the nipple member is in a protruding position, the hose is between the outer side of the nipple member and the inner side of the body portion It provides a hose extraction device, characterized in that the pinch is fixed.

In an embodiment of the present invention, it may further include an elastic support portion provided between the inner side of the body portion and the outer side of the clamping portion, for pressing the clamping portion in one direction.

In an embodiment of the present invention, it is provided to cover the open surface of the other side of the body, it may further include a cover having an air injection hole.

In an embodiment of the present invention, it may further include an air injection part connectable to the air injection hole of the cover part.

In an embodiment of the present invention, the clamping part has a clamping body in which the nipple member is provided on one side, a through hole is provided to penetrate the clamping body, and air is injected between the mandrel and the hose through the through hole. Can be.

In an embodiment of the present invention, a fixing part provided on an outer surface of the body part and a handle part provided on one side of the fixing part may be further included.

According to an embodiment of the present invention, it is possible to provide a hose extraction device for extracting a hose from a mandrel after a vulcanization process of a molded rubber hose.

In addition, according to an embodiment of the present invention, it is possible to easily respond to the shape of various mandrels or rubber hoses, can be conveniently used by an operator, and can provide a hose extraction device that can easily remove the hose from the mandrel.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description or claims of the present invention.

1 is a view showing a state in which a molded rubber hose is located on a mandrel after a curing process.
2 is a schematic diagram of a hose extraction apparatus according to an embodiment of the present invention.
3 is a cross-sectional view of the hose extraction device of FIG. 2.
4 and 5 are detailed cross-sectional views for each part of the hose extraction device of FIG. 2.
Figure 6 is a state diagram of the hose extraction device of Figure 2 in use.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be implemented in various different forms, and therefore is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected (connected, contacted, bonded)" with another part, it is not only "directly connected", but also "indirectly connected" with another member in the middle. "Including the case. In addition, when a part "includes" a certain component, this means that other components may be further provided, not excluding other components, unless specifically stated to the contrary.

The terms used in the present specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a state in which a molded rubber hose is located on a mandrel after a vulcanization process. Specifically, FIG. 1 shows a state after a vulcanization process is performed by putting a rubber hose in an uncured or semi-vulcanized state into a vulcanizing chamber.

As shown, the hose (H) is fitted on the outside of the mandrel (M) in the form of a curved tube (tube) whose ends are closed. The mandrel (M) may be made of a metal. Hose (H) may have a variety of lamination forms, for example, a hose (H) such as an automobile fuel hose or automobile brake hose, the inner/outside of a reinforcing layer made of high-tensile fibers for heat resistance, cold resistance, vibration resistance, and chemical resistance. It may have a configuration of forming a multi-layered rubber layer. The hose extraction apparatus according to the embodiment of the present invention is used to extract the hose H from the mandrel M after the vulcanization process.

2 is a schematic view of a hose extraction device according to an embodiment of the present invention, FIG. 3 is a cross-sectional view of the hose extraction device of FIG. 2, and FIGS. 4 and 5 are detailed cross-sectional views of each part of the hose extraction device of FIG. 2.

The hose extraction device 1 according to the embodiment of the present invention may include a body portion 10 and a clamping portion 20. The hose extraction device 2 may further include a cover part 30, an elastic support part 40, a fixing part 50, a handle part 60, and an air injection part 70.

A hollow portion through which the hose H can be inserted may be provided inside the body portion 10. The body portion 10 may have a first body portion 11 and a second body portion 12, and the first body portion 11 and the second body portion 12 may be integrally formed.

A first hollow portion 14 is provided inside the first body portion 11, and a second hollow portion 14 is disposed inside the second body portion 12 located on the side where the mandrel (M) and hose (H) are inserted. A portion 13 may be provided. The first hollow portion 14 and the second hollow portion 13 may be collectively referred to as a hollow portion, and may be spatially connected.

The diameter D2 of the first hollow portion 14 may be larger than the diameter D1 of the second hollow portion 13. Accordingly, a first stepped portion 16 may be provided between the first body portion 11 and the second body portion 12. The first stepped jaw 16 may support one end of the elastic support part 40.

The clamping part 20 may be located in the first hollow part 13, and the mandrel M and the hose H may be inserted and located in the second hollow part 14. The diameter D1 of the second hollow part 13 may be provided larger than the outer diameter of the hose H so that the mandrel M and the hose H can be inserted with a margin.

A plurality of ring-shaped grooves 15 may be provided inside the second body 12. The groove 15 serves to prevent the hose H from being pulled out when the hose H is pinched and fixed between the inner side of the body 10 and the outer side of the nipple member 22 to be described later. The shape of the groove 15 is not limited to the illustrated one, and may be provided in various patterns. For example, the groove 15 may have a thread shape or a knurling pattern.

The body portion 10 may be made of an engineering plastic material including MC nylon, but is not limited to this material.

Next, the clamping portion 20 is provided to be movable in the inner hollow portion of the body portion 10, and may have a tubular nipple member 22 that can be inserted between the mandrel (M) and the hose (S). When the nipple member 22 is in a protruding position (refer to FIG. 6(b)), the hose S may be pinched and fixed between the outside of the nipple member 22 and the inside of the body part 10.

The clamping part 20 may have a clamping body 21 on which the nipple member 22 is provided on one side. A through hole 27 may be provided to pass through the clamping body 21, and air may be injected between the mandrel M and the hose H through the through hole 27. The through hole 27 may be disposed in the center of the clamping body 21, but is not limited thereto. In addition, a plurality of through holes 27 may be provided.

The clamping body 21 may be provided as a cylindrical member, and a groove 25 may be provided on an outer surface of the clamping body 21. A sealing ring 26 may be disposed in the groove 25. Air injected into the clamping portion 20 by the sealing ring 26 can be prevented from leaking out of the clamping body 21. A plurality of sealing rings 26 may be provided.

Air injected into the clamping part 20 may be injected between the mandrel M and the hose H through the through hole 27 through the inner hollow region 23 of the nipple member 22. Due to this air injection, the operator can take out the hose (H) with a small force.

The nipple member 22 may be a tubular member protruding from one end face of the clamping part 20 in a direction in which the mandrel M or the hose S is located. The end of the nipple member 22 may have a sharp acute angle so that it can be inserted between the mandrel (M) and the hose (S). After the end of the nipple member 22 is inserted between the mandrel (M) and the hose (S), only the mandrel (M) may be inserted into the inner hollow region 23 of the nipple member 22 (see FIG. 6). . To this end, the diameter of the inner hollow region 23 may be formed to be substantially equal to or slightly larger than the diameter of the mandrel (M).

A second stepped step 24 may be provided between the clamping body 21 and the nipple member 22. The second stepped jaw 24 may support the other end of the elastic support portion 40.

The nipple member 22 may be made of stainless steel, but is not limited to this material.

Next, the cover part 30 may be provided to cover the other side open surface of the body part 10. The cover part 30 may be bolted to the body part 10, but is not limited to such a fastening method. An air injection hole 31 may be provided in the cover part 30, and an air injection part 70 to be described later may be coupled to the air injection hole 31.

The cover part 30 may be made of an aluminum alloy or other metal material, but is not limited to this material.

The elastic support part 40 may be provided between the inner side of the body part 10 and the outer side of the clamping part 20 to press the clamping part 20 in one direction. The elastic support part 40 may be a coil spring. The nipple member 22 may be located in the central hollow space of the coil spring-shaped elastic support part 40. One side of the elastic support part 40 may be supported by the first stepped jaws 16 provided on the body part 10, and the other side of the elastic support part 40 is caught in the second stepped part 24 of the clamping part 20 Can be supported.

The fixing part 50 may be provided on the outer surface of the body part 10. The fixing part 50 is a ring-shaped member, provided on the outer surface of the body part 10, and may be a member fixing the handle part 60. Referring to FIG. 5, the fixing part 50 may include a first fixing member 51 and a second fixing member 52. Each of the first fixing member 51 and the second fixing member 52 may have a half ring shape, and a first fixing member groove 511 and a second fixing member 52 provided in the first fixing member 51. A bolt is fastened to the second fixing member groove 521 provided in ), so that the bolts may be coupled to each other. A fixing groove 522 may be provided at one side of the second fixing member 52.

The handle part 60 is a member that can be gripped when an operator performs the extraction operation using the hose extraction device 1, and may be provided on one side of the fixing part 50. The handle part 60 is a handle body 61 that can be gripped by an operator, and is provided on one side of the handle body 61, and can be coupled to the fixing groove 522 of the second fixing member 52 It may have a connecting member 62. The handle part 60 and the fixing part 50 may be screwed, but are not limited to this coupling method.

The air injection unit 70 can be connected to the air injection hole 31 of the cover unit 30 and can inject air into the inside of the hose extraction device 1. The air injection part 70 is provided in the air injection body 71 coupled to the air injection hole 31, the air injection switch 72 provided in the air injection body 71 and controls whether or not air is injected, and from the outside. It may have an air injection pipe 73 to receive air.

Next, the operation of the hose extraction apparatus 1 according to an embodiment of the present invention will be described with reference to the drawings. Figure 6 is a state diagram of the hose extraction device of Figure 2 in use.

As shown in (a) of Figure 6, the hose (H) is coupled to the outside of the mandrel (M) in the state of completing the curing process. In this state, the operator inserts the mandrel (M) and the hose (H) into the front end of the hose extraction device 1, that is, the second hollow portion 14 of the body portion 10.

At this time, since air is not injected, the clamping portion 20 is held in the return position by the repulsive force of the elastic support portion 40 (Fig. 6(a)). In this state, when the front end of the mandrel M is put into the inner hollow region 23 of the nipple member 22, the end of the nipple member 22 reaches a point where the mandrel M and the hose S contact each other.

After that, the operator can inject air by pressing the air injection switch 72 of the air injection unit 70. The injected air enters the region of the first hollow part 13 of the body part 10 through the air injection hole 31 of the cover part 30, and the clamping part 20 is elastically supported by the pressure of this air. It overcomes the repulsive force of 40 and protrudes toward the hose (H).

6B shows a state in which the clamping part 20 has moved to a protruding position. When the clamping part 20 moves by the pressure of the air, the end of the nipple member 22 of the clamping part 20 is inserted between the mandrel (M) and the hose (S). Accordingly, the front end of the hose (S) is spaced from the mandrel (M), and accordingly, the front end of the hose (S) is pinched and fixed between the outer side of the nipple member 22 and the inner side of the body portion 10. In this case, separation of the hose S may be prevented by the groove 15 provided on the inside of the second body 12.

Thereafter, air is introduced into the inner hollow region 23 of the nipple member 22 through the through hole 27 of the clamping body 21. The air introduced into the inner hollow area 23 is injected between the mandrel (M) and the hose (S), and the operator can extract the hose (H) from the mandrel (M) with a small force due to the influence of this inlet air. There will be. That is, in the state where the front end portion of the hose (H) is pinched and fixed between the outer side of the nipple member 22 and the inner side of the body portion 10, when the operator separates the hose extraction device 1 from the mandrel (M), the mandrel Air is injected between the (M) and the hose (H), and the extraction process of the hose (H) can be easily performed.

Thereafter, when the operator stops the pressing operation of the air injection switch 72, air injection is stopped, and accordingly, the clamping unit 20 returns to the return position. Accordingly, the hose H, which has been pinched and fixed, can be taken out from the hose extraction device 1, thereby completing the extraction of the hose H.

By using the hose extraction device 1 according to the embodiment of the present invention, the operator can conveniently remove the hose H from the mandrel M after the vulcanization process of the rubber hose. Since the hose extraction apparatus 1 according to the embodiment of the present invention is a kind of work tool, there is no need to be dedicated to a specific mandrel (M) or vulcanization process. That is, it is possible to correspond to the shape of various mandrel (M) or hose (H).

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative and non-limiting in all respects. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

1 hose extraction device
10 Main body
20 clamping part
30 Cover part
40 elastic support
50 Fixture
60 handle part
70 Air inlet
M mandrel
H hose

Claims (6)

As a hose extraction device for removing a hose from a mandrel,
A first body portion in which a first hollow portion is formed, a second hollow portion spatially connected to the first body portion and having a diameter larger than the diameter of the first hollow portion is formed, and the mandrel and the hose are inserted into the second body portion. A body portion including a body portion,
A tubular nipple member provided to be movable in the first body portion and the second body portion and insertable between the mandrel and the hose, and formed on one side of the nipple member, and penetrating the mandrel and the hose. A clamping part including a clamping body in which a through hole through which air can be injected is formed,
A first stepped jaw formed between the first body portion and the second body portion,
A second stepped jaw formed between the clamping body and the nipple member,
It is formed between the inner side of the body portion and the outer side of the clamping portion, and between the first stepped and the second stepped, and includes an elastic support portion for pressing the clamping portion in one direction,
When the nipple member is in the protruding position, the hose is pinched and fixed between the outer side of the nipple member and the inner side of the body portion,
The clamping body includes a clamping groove formed on an outer surface, and a sealing ring disposed in the clamping groove to prevent a phenomenon in which air injected toward the clamping portion leaks out of the clamping body,
The second body portion, a hose extraction device, characterized in that it further comprises a separation preventing groove formed inside to prevent separation of the hose introduced into the second hollow portion.
delete The method of claim 1,
It is provided to cover the open surface of the other side of the body, characterized in that it further comprises a cover having an air injection hole,
Hose extraction device.
The method of claim 3,
It characterized in that it further comprises an air injection part connectable to the air injection hole of the cover part,
Hose extraction device.
The method of claim 1,
The clamping part is provided with a through hole to penetrate the clamping body,
Air is injected between the mandrel and the hose through the through hole,
Hose extraction device.
The method of claim 1,
A fixing part provided on the outer surface of the body part,
It characterized in that it further comprises a handle portion provided on one side of the fixing portion,
Hose extraction device.

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