Fitting bending device with a pinching prevention function

Abstract

The present invention relates to a fitting bending device with a pinch prevention function, and more specifically, to a fitting bending device with a pinch prevention function that bends a fitting whose length is shorter than a predetermined length and has a structure that can adjust the fixed and separated states of the fitting so that the fitting bending device is not pinched between the fitting and a protruding portion of the fitting after bending.

Description

Technical Field

[0001] The present invention relates to a fitting bending device having a function of preventing being pinched, and more particularly, to a fitting bending device having a structure capable of adjusting the fixing and separating states of a fitting so that a fitting having a length shorter than a predetermined length is bent and the fitting bending device is not pinched between the protruding portion of the fitting after bending.

Background Art

[0002] High-pressure fittings that are connected to pipes / high-pressure hoses for transferring high-pressure fluids and are bent (bent) at a predetermined angle to change the direction of the pipes use products of various specifications / sizes / sizes according to their applications.

[0003] In order to transfer high-pressure fluids, the high-pressure fittings are manufactured from a predetermined metal material, and a bending device for bending a pipe having a predetermined strength is used.

[0004] In the case of bending a short fitting, a conventional fitting bending device has a problem that the fitting mounting portion of the bending device is pinched between the protruding portion of the fitting and a thread forming portion or the like, and it becomes very difficult or impossible to separate the fitting from the bending device after the bending operation is completed.

[0005] Even when the fitting can be separated from the bending device, there is a loss of time due to the inability to quickly separate the fitting in the process, and there is a problem that the fitting product may be deformed / damaged when the fitting is forcibly separated by an external force.

[0006] On the one hand, if the fitting cannot be separated from the bending device, the manufacturing process itself must be changed. The two side ends (protrusions) and the bending part of the fitting must be manufactured separately, and then joined together through processes such as welding. In that case, not only will the product unit price increase due to the increased lead time and manufacturing costs, but if the welding is not properly performed, a fatal problem may occur due to oil leakage, so there is a problem that a separate airtight test process is required to prevent this.

Summary of the Invention

Problems to be Solved by the Invention

[0007] The problem to be solved by the present invention is to improve the limitations of the conventional fitting bending device as described above, and to provide a fitting bending device with a function of preventing clamping, which can adjust the fixed / separated state of the fitting to a desired state so that the fitting can be bent and then easily removed from the device.

Means for Solving the Problems

[0008] In order to improve the limitations of the conventional fitting bending device as described above, the present invention provides a fitting bending device with a pinching prevention function that bends a fitting so that the inlet and outlet have a predetermined angle and can remove the bent fitting. In the fitting bending device, a fitting mounting portion is formed with a groove having a predetermined curvature in a predetermined arc shape so that the outer peripheral surface of the fitting is mounted, and is disposed on one side of the fitting mounting portion, fixed during the process of bending the fitting, and provided with a space for removing the bent fitting after the process of bending the fitting, and is transferred so as to be separated from the groove of the fitting mounting portion, and includes a separating portion having a predetermined fixing and separating structure, a transfer shaft that forms a path along which the separating portion is transferred and is disposed in a direction perpendicular to a plane including an arc forming the groove of the fitting mounting portion, and an adjusting jig that is disposed above the transfer shaft and adjusts the switching between the fixed and separated states of the separating portion. During the process of bending the fitting, the end of the fitting is fixed so that the fitting does not move even when an external load is applied, and after the process of bending the fitting, the fixing of the end of the fitting is released. A fitting bending device with a pinching prevention function is provided.

[0009] Further, the separating portion may include a mounting extension portion in which an extension groove forming a part of the groove of the fitting mounting portion is formed, and an independent groove structure body that is provided as a component independent of the groove of the fitting mounting portion above the mounting extension portion and has a groove corresponding to the extension groove in a state of being in close contact with the mounting extension portion. The transfer shaft may include a support shaft fixed to one side of the mounting extension portion, a spring connected to the support shaft and applying an upward biasing force to the independent groove structure body, and a hook that prevents the independent groove structure body from being removed from the transfer shaft.

[0010] Furthermore, the adjustment jig is disposed above the fitting mounting portion and fixed by a predetermined hinge, and includes an adjustment body 4 formed in a predetermined elongated shape that can rotate about the hinge, a hook rail formed on the bottom surface of the adjustment body 4 so that the hook and the adjustment body 4 do not interfere with each other when the adjustment body 4 rotates, and a lever connected to one side of the adjustment body 4 and receiving a predetermined power so that the adjustment body 4 rotates. The separation portion is fixed to the independent groove structure, includes a grip extending in a direction parallel to the transfer shaft, a hook through hole formed in the independent groove structure to prevent the independent groove structure from being removed from the transfer shaft by the hook, and a guide through hole formed below the hook through hole and having an inner diameter smaller than the inner diameter of the hook through hole, which performs a predetermined guiding function so that the independent groove structure does not swing in a direction other than the axial direction of the transfer shaft when the independent groove structure moves in the vertical direction. The transfer shaft is configured in a predetermined screw shape, and the hook is formed to have an outer diameter larger than the outer diameter of the support shaft so as to function as the head of the screw, and the height of the hook with respect to the mounting extension portion may be configured to be adjustable by fastening or releasing the screw to the mounting extension portion.

[0011] Furthermore, it further includes a protruding portion mounting portion detachably fastened to the mounting extension portion and the independent groove structure, respectively, and having a predetermined groove formed so that the protruding portion of the fitting is mounted. By replacing the protruding portion mounting portion according to the size of the fitting, it may be configured to be able to bend fittings of different specifications or sizes with a single device.

Advantages of the Invention

[0012] According to an embodiment of the present invention, after bending the high-pressure fitting, it is possible to prevent the phenomenon that the bending device is sandwiched in the space between the protruding portion of the fitting and the like.

[0013] In addition, it is possible to configure a bending device that can use fittings of various specifications / sizes.

[0014] Furthermore, since the bent fitting can be easily removed from the bending device, deformation and damage of the fitting can be prevented.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0016] Hereinafter, various embodiments of the present invention will be described with reference to the accompanying drawings. However, this does not limit the technology disclosed in this specification to specific embodiments, and it should be understood that various modifications, equivalents, and / or alternatives of the embodiments of the present invention are included. In the description of the drawings, similar components are denoted by similar reference numerals.

[0017] In this specification, expressions such as "including" and "may include" indicate the presence of the feature (for example, components such as numerical values, functions, operations, parts, etc.), and do not exclude the presence of other features.

[0018] In this specification, expressions such as "at least one of A or / and B" include all possible combinations of the items listed together. For example, "A or B" and "at least one of A and B" include (1) those including at least one A, (2) those including at least one B, and (3) those including both at least one A and at least one B.

[0019] When a certain component (for example, the first component) is referred to as being "(operatively or communicatively) coupled with / to" or "connected to" another component (for example, the second component), it should be understood that the certain component may be directly coupled to the other component, or may be coupled via yet another component (for example, the third component).

[0020] The terms used in this specification are merely for the purpose of describing particular embodiments and do not limit the scope of other embodiments. Singular expressions include plural expressions unless otherwise specified.

[0021] Terms used in the present invention, including technical or scientific terms, are used in a meaning commonly understood by those having ordinary knowledge in the technical field to which the present invention pertains. Among the terms used in this specification, terms defined in commonly used dictionaries are interpreted to have the same or similar meanings as their contextual meanings in the related art, and should not be interpreted in an ideal or overly formal meaning unless otherwise specified. In some cases, even terms defined in this specification should not be interpreted so as to exclude embodiments of the present invention.

[0022] It goes without saying that various modifications can be made by those with ordinary knowledge in the technical field to which the present invention pertains without departing from the gist of the present invention claimed in the claims of the present invention, and such modifications should not be construed as being separate from the technical idea and prospect of the present invention.

[0023] In the description of the invention, terms such as "upper part", "upper stage", "vertical", "parallel", etc. are defined in the drawings, and the shape and position of each component are not limited by these terms.

[0024] In the terms used in this specification, it should be understood that the singular expressions include plural expressions unless otherwise specified, and terms such as "including" indicate the existence of the described features, numbers, steps, operations, components, parts or combinations thereof, and it should be understood that they do not exclude the existence or possibility of addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0025] According to an embodiment of the present invention, in a fitting bending device having a pinched prevention function so that the fitting 5 is bent such that the inlet 51 and the outlet 51 have a predetermined angle and the bent fitting 5 can be removed, a fitting mounting portion 1 in which a groove (fitting groove 10) having a predetermined curvature is formed in a predetermined arc shape so that the outer peripheral surface of the fitting 5 is mounted, a separation portion 2 having a predetermined fixing and separating structure that is disposed on one side of the fitting mounting portion 1, is fixed during the process of bending the fitting 5, and is transferred so as to be separated from the groove of the fitting mounting portion 1 so that a space for removing the bent fitting 5 is provided after the process of bending the fitting 5, a transfer shaft 3 that forms a path along which the separation portion 2 is transferred and is disposed in a direction perpendicular to a plane including the arc forming the groove 10 of the fitting mounting portion 1, and an adjustment jig 4 that is disposed above the transfer shaft 3 and adjusts the switching of the fixed and separated states of the separation portion 2 are included, and the end portion of the fitting 5 is fixed so that the fitting 5 does not move even when an external load is applied during the process of bending the fitting 5, and the fixing of the end portion of the fitting 5 is released after the process of bending the fitting 5, thereby providing a fitting bending device having a pinched prevention function.

[0026] The aforementioned "inlet and outlet" 51 is a term used to distinguish two different holes of the fitting 5, and the components of the present invention are not limited by the direction in which the fluid flows when the fitting 5 is used.

[0027] The "groove having a predetermined curvature (fitting groove 10)" is formed to have a curvature that is larger than the outer diameter of the fitting 5 by a predetermined size so that the outer peripheral surface of the fitting 5 to be bent is mounted.

[0028] The central angle of the "predetermined arc" of the fitting mounting portion 1 is configured to be 60 degrees to 180 degrees. According to the central angle, products with a bending angle of 90 degrees (the "L"-shaped fitting 5) or 180 degrees (the "U"-shaped fitting 5) of the fitting 5 can be appropriately manufactured (bent).

[0029] On the opposite side of the fitting mounting portion 1 (the side facing away from the center point of the predetermined arc), a load support portion 12 is formed. The load support portion 12 functions to withstand the load applied to the fitting mounting portion 1 via the fitting 5 in the bending process. More specifically, it reduces the magnitude of the moment applied to the point where the fitting mounting portion 1 is connected due to the load applied to the fitting mounting portion 1, so that damage to the device can be prevented and a bending process with a larger load can be enabled.

[0030] Alternatively, a groove (the second fitting groove) having the predetermined curvature is formed in the load support portion 12, and is provided so as to have a curvature different from that of the groove (the first fitting groove 10) having the predetermined curvature formed in the fitting mounting portion 1, so that the fitting 5 having different outer diameters can be bent with one device. However, in that case, the separation portion 2, the transfer shaft 3, the adjustment jig 4, etc., which are components of the present invention, must also be provided in the load support portion 12 in the same manner, and the components must be appropriately arranged so that the components do not interfere with each other. Since such a configuration is within the range that can be easily implemented with reference to the description of the present invention, a specific description is omitted.

[0031] Further, the separation part 2 includes a mounting extension part 11 in which an extension groove 110 forming a part of the groove of the fitting mounting part 1 is formed, and an independent groove structure body 21 which is provided as a component independent of the groove of the fitting mounting part 1 above the mounting extension part 11 and in which a groove corresponding to the extension groove 110 is formed in a state of being in close contact with the mounting extension part 11. The transfer shaft 3 includes a support shaft 30 fixed to one side of the mounting extension part 11, a spring 31 connected to the support shaft 30 and applying an upward biasing force to the independent groove structure body 21, and a hook 32 for preventing the independent groove structure body 21 from being removed from the transfer shaft 3.

[0032] The mounting extension part 11 may be formed such that only a part (lower part) having a quarter-circular cross section (an arc with a central angle of 90 degrees) is extended in the fitting groove 10 having a semi-circular cross section, or may be configured by adding a member having such a shape.

[0033] According to the above structure, the fitting 5 is mounted in the fitting groove 10 (half is inserted into the semi-circular groove), and only a quarter part of the end of the fitting 5 is mounted by the mounting extension part 11.

[0034] On the other hand, when the independent groove structure body 21 is in close contact with the upper part of the mounting extension part 11, the remaining quarter part of the end of the fitting 5 is mounted, and the end of the fitting 5 is fixed (mounted) between the mounting extension part 11 and the independent groove structure body 21.

[0035] The support shaft 30 is connected in parallel or in series with the spring 31. FIGS. 1 to 6 of the present invention show an embodiment in which the support shaft 30 and the spring 31 are connected in parallel (a form in which the support shaft 30 is inserted inside the spring 31). In an embodiment in which the support shaft 30 and the spring 31 are connected in series, the height adjustment function of the hook 32 by screwing the support shaft 30 described later is not provided.

[0036] In addition, the adjustment jig 4 is disposed above the fitting mounting portion 1 and fixed by a predetermined hinge, and includes an adjustment main body 4 formed in a predetermined elongated shape that can rotate about the hinge, a hook rail 40 formed on the bottom surface of the adjustment main body 4 so that the hook 32 and the adjustment main body 4 do not interfere with each other when the adjustment main body 4 rotates, and a lever 41 connected to one side of the adjustment main body 4 and receiving a predetermined power so that the adjustment main body 4 rotates. The separation portion 2 is fixed to the independent groove structure 21, and includes a grip 22 extending in a direction parallel to the transfer shaft 3, a hook through hole 211 formed in the independent groove structure 21 to prevent the independent groove structure 21 from being removed from the transfer shaft 3 by the hook 32, and a guide through hole 212 formed below the hook through hole 211 and having an inner diameter smaller than the inner diameter of the hook through hole 211, which provides a predetermined guiding function so that the independent groove structure 21 does not swing in a direction other than the axial direction of the transfer shaft 3 when the independent groove structure 21 moves in the vertical direction. The transfer shaft 3 is configured in a predetermined screw shape, and the hook 32 is formed to have an outer diameter larger than the outer diameter of the support shaft 30 so as to function as the head of the screw, and is configured to be able to adjust the height of the hook 32 with respect to the mounting extension portion 11 by fastening or releasing the screw to the mounting extension portion 11.

[0037] The "elongated shape" means a shape having a predetermined length and / or a shape having a predetermined eccentricity. For example, a member having an elliptical or rectangular (embodiment shown in the drawing) cross-section, or a cam shape, even if it is a member having a circular or square cross-section, is considered "elongated" if the point (rotation axis) connected to the hinge is separated from the center of the circle.

[0038] The lever 41 and the grip 22 may be manually operated by an operator involved in the process, or may be automatically operated by an automated device or the like.

[0039] When manually operated by an operator, the fixed and separated states are switched by operating the lever 41 while holding the grip 22 by hand and pushing it in.

[0040] The outer diameter of the hook 32 is formed to be smaller than the inner diameter of the hook through-hole 211 by a predetermined size, and the outer diameter of the support shaft 30 is preferably formed to be smaller than the inner diameter of the guide through-hole 212 by a predetermined size.

[0041] The adjustment body 4 that moves up and down through the hook through-hole 211 and the guide through-hole 212 has its upper height restricted by the upper hook 32 being locked to a protrusion formed at a point between the hook through-hole 211 and the guide through-hole 212.

[0042] Alternatively, the hook through-hole 211 and the guide through-hole 212 may have the same inner diameter, and a predetermined protrusion may be formed between the hook through-hole 211 and the guide through-hole 212. The embodiment shown in FIG. 4 is an embodiment in which the hook through-hole 211 and the guide through-hole 212 have the same inner diameter as described above.

[0043] Furthermore, it further includes a protrusion mounting portion 23 in which a predetermined groove 230 is formed so as to be detachably fastened to the mounting extension portion 11 and the independent groove structure body 21 respectively, and the protruding portion 52 of the fitting 5 is mounted. By replacing the protrusion mounting portion 23 according to the size of the fitting 5, it may be configured such that fittings 5 of different specifications or sizes can be bent with a single device.

[0044] The protrusion mounting portion 23 is detachably fastened to the side surface of the end portion of the mounting extension portion 11 and the side surface of the independent groove structure body 21 by a predetermined screw / bolt or the like.

[0045] The protrusion mounting portion 23 is formed to mount / fix any of the protruding portions 52 of the fitting 5, and is formed in a predetermined polygonal shape corresponding to the protruding portion 52 in order to mount a predetermined polygonal protruding portion 52 such as a bolt head. FIG. 2 shows an embodiment in which a predetermined trapezoidal protrusion mounting portion 23 is formed to mount a fitting 5 having a hexagonal protruding portion 52.

[0046] According to the above structure, even when the outer diameter of the fitting 5 is smaller than the fitting groove 10, the tangential part parallel to the central axis of the fitting 5 is in close contact with the fitting groove 10 and is bent, so that it can be supported / fixed by the fitting mounting part 1 and receive a load from the bending die.

[0047] Further, in a fitting manufacturing method using a fitting bending device having such a pinching prevention function, a step of coupling a bush to the thread 53 of the fitting 5, a step of mounting the fitting 5 on the fitting mounting part 1, a step of fixing the fitting 5 using the adjusting jig 4, a step of inserting a fixing shaft into one side of the fitting 5, a step of bringing the clamp into contact with the bush, a step of rotating the bending die and applying a load so that the part where the bush is coupled is bent with respect to the part fixed by the fixing shaft, a step of retracting the fixing shaft and the clamp, a step of separating the fitting 5 from the fitting mounting part 1 using the adjusting jig 4, and a step of separating the bush from the fitting 5 are provided.

[0048] The clamp includes a first clamp that supports any protruding part 52 of the fitting 5 and a second clamp that supports the bush. By rotating the bending die with the first clamp and the second clamp fixed, the fitting 5 can be bent with reference to the center of the fitting groove 10.

[0049] Hereinafter, with reference to FIG. 6, the bending process will be described.

[0050] First, as shown in FIG. 6(a), with the independent groove structure 21 attached to the attachment extension part 11 in close contact with the grip 22, the adjustment main body 4 is rotated by the lever 41 to fix the independent groove structure 21. Here, the hook 32 is accommodated inside the adjustment main body 4 along the hook through hole 211.

[0051] Next, as shown in FIG. 6(b), the fitting 5 with the bush combined is attached to the fitting attachment part 1. With the fitting attached, the clamp is advanced to fix the bush, the protruding part 52 located at the other end, or the main body of the fitting 5.

[0052] Next, as shown in FIG. 6(c), with the fitting 5 fixed, a predetermined load is applied so that the fitting 5 is bent by rotating the bending die to which any of the clamps is connected (rotation centered on the center point of the "predetermined arc"). After the bending is completed, the clamp is retracted to its original state.

[0053] Finally, as shown in FIG. 6(d), the separation part 2 is operated so that the fitting can be easily separated. The bent fitting 5 is taken out from the fitting attachment part 1.

Claims

1. In a fitting bending device having a pinching prevention function, the fitting is bent so that the inlet and the outlet have a predetermined angle, and the bent fitting can be removed. A fitting mounting portion having a groove with a predetermined curvature formed in a predetermined arc shape so that the outer peripheral surface of the fitting is mounted; A separating portion having a predetermined fixing and separating structure, which is disposed on one side of the fitting mounting portion, is fixed during the process of bending the fitting, and is transferred so as to be separated from the groove of the fitting mounting portion so that a space for removing the bent fitting is provided after the process of bending the fitting; A transfer shaft that forms a path along which the separating portion is transferred and is disposed in a direction perpendicular to a plane including an arc forming the groove of the fitting mounting portion; An adjusting jig disposed above the transfer shaft for adjusting the switching between the fixed state and the separated state of the separating portion. The separating portion includes A mounting extension portion in which an extension groove forming a part of the groove of the fitting mounting portion is formed; An independent groove structure provided as a component independent of the groove of the fitting mounting portion above the mounting extension portion, and having a groove corresponding to the extension groove in a state of being in close contact with the mounting extension portion. The transfer shaft includes A support shaft fixed to one side of the mounting extension portion; A spring connected to the support shaft and applying an upward biasing force to the independent groove structure; A hook for preventing the independent groove structure from being removed from the transfer shaft. During the process of bending the fitting, the end portion of the fitting is fixed so that the fitting does not move even when an external load is applied. A fitting bending device having a pinching prevention function, which is configured to release the fixing of the end portion of the fitting after the process of bending the fitting.

2. The adjustment jig is disposed above the fitting mounting portion and fixed by a predetermined hinge, and is formed in a predetermined elongated shape that can rotate about the hinge; an adjustment body A hook rail formed on the bottom surface of the adjustment body so that the hook and the adjustment body do not interfere with each other when the adjustment body rotates; It is connected to one side of the adjustment body and includes a lever that receives a predetermined power so that the adjustment body rotates. The separation part is A grip fixed to the independent groove structure and extending in a direction parallel to the transfer shaft; A hook through-hole formed in the independent groove structure to prevent the independent groove structure from being removed from the transfer shaft by the hook; When the independent groove structure moves in the vertical direction, it performs a predetermined guiding function so that the independent groove structure does not swing in a direction other than the axial direction of the transfer shaft, and is formed below the hook through-hole to have an inner diameter smaller than the inner diameter of the hook through-hole. And a guide through-hole; The transfer shaft is configured in a predetermined screw shape; The hook is formed to have an outer diameter larger than the outer diameter of the support shaft so as to function as the head of the screw; The fitting bending device with a pinching prevention function according to claim 1, wherein the height of the hook with respect to the mounting extension portion can be adjusted by fastening or releasing the screw to the mounting extension portion.

3. Further includes a protruding portion mounting portion that is detachably fastened to the mounting extension portion and the independent groove structure, and a predetermined groove is formed so that the protruding portion of the fitting is mounted; The fitting bending device with a pinching prevention function according to claim 1, wherein different specifications or sizes of fittings can be bent with a single device by replacing the protruding portion mounting portion according to the size of the fitting.

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