JP5382294B2 - Caulking device for hose fittings - Google Patents

Description

The present invention relates to oak main equipment of hose joint fittings for fixing the joint fitting by caulking to the various fluid flow hose.

  2. Description of the Related Art Conventionally, a hose that circulates a fluid such as gas or liquid has a joint for connecting a pipe, and is connected to an arbitrary pipe through the joint. That is, the joint fitting 1 shown in FIG. 10 includes a tubular joint member 1 a disposed on the radially inner side of the hose 2 and a cylindrical fixing member 1 b disposed on the radially outer side of the hose 2. The diameter of 1b is reduced by caulking to fix the hose 2 to the joint member 1a. In this case, the pressing die 3 shown in FIG. 11 (a) is used, and as shown in FIG. 11 (b), two pairs of pressing portions 3a and 3b provided on the pressing die 3 are caulked at two locations in the axial direction of the fixing member 1b. To do at the same time.

  However, a gap is provided between the one end of the fixing member 1b in the axial direction and the joint member 1a by an amount corresponding to the hose 2, but the other end in the axial direction of the fixing member 1b is blocked from the joint member 1a. Therefore, if the fixing member 1b is caulked simultaneously at two locations in the axial direction, the rubber of the hose 2 is pushed out from one axial end side of the fixing member 1b, and a bulging portion 2a due to uneven distribution of the rubber is generated in the hose 2. There is a problem that the amount of rubber in the fixing member 1b is insufficient due to the rubber being pushed out and the sealing performance is lowered.

Therefore, as shown in FIG. 12 (a), the first and second pressing dies 4, 5 adjacent to each other in the axial direction of the joint fitting 1 are used, and the first pressing die 4 as shown in FIG. 12 (b). After pressing the axial direction one end side of the fixing member 1b by the pressing portion 4a, the fixing member 1b is caulked by the pressing portion 5a of the second pressing die 5 on the other axial end side of the fixing member 1b. There is known a caulking device that performs caulking so that the rubber of the hose 2 is not pushed out from one end side in the axial direction (see, for example, Patent Document 1).
JP 10-94845 A

  However, in the caulking device, the first and second pressing dies 4 and 5 arranged in two rows in the axial direction of the fitting 1 need to be driven by separate driving mechanisms so that the caulking timings are shifted. The existing caulking device having only one drive mechanism for driving the pressing die has to be replaced with a new device, which increases the equipment cost.

The present invention has been made in view of the above problems, and the object of the present invention is to perform crimping on one end side in the axial direction of the joint fitting, and then crimping on the other end side in the axial direction of the joint fitting. even when to provide an oak main equipment of hose joint fitting that can drive the push-type for caulking by one driving mechanism.

In order to achieve the above object, the present invention provides a caulking device for a joint fitting for a hose, which is provided so as to be movable in the radial direction of the joint fitting and reduces the diameter of the joint fitting into which the hose is inserted from the outside in the radial direction by caulking. A pressing die having first and second pressing portions that are caulked on one end side and the other end side in the axial direction of the fitting, respectively, and an interval in the axial direction of the fitting. And a drive mechanism for tilting the pressing die in the axial direction of the joint fitting so that the second pressing portion is in pressure contact with the joint fitting after being moved inward in the radial direction of the joint fitting so as to be in pressure contact with the fitting. The drive mechanism is provided with a cam portion that moves in the radial direction of the joint fitting by moving in the circumferential direction of the joint fitting while abutting against the push die, and the cam portion is connected to the joint portion. Move in the circumferential direction of the bracket Pressing die is provided with engaging grooves for engaging the push-type to tilt in the axial direction of the joint fittings.

  Accordingly, when the pressing die is driven by the drive mechanism, the second pressing portion of the pressing die moves after moving toward the radially inner side of the fitting so that only the first pressing portion of the pressing die is pressed against the fitting. By tilting in the axial direction of the fitting so that it is pressed against the fitting, the two places in the axial direction of the fitting are reduced by caulking, so after caulking one end in the axial direction of the fitting, Even when caulking is performed on the other end side in the axial direction of the joint fitting, the pressing die can be driven by one drive mechanism.

  According to the present invention, the push die can be driven by a single drive mechanism even when the axial end of the joint fitting is crimped after the axial end of the joint fitting is axially crimped. As a result, the structure can be simplified. Thereby, for example, the drive mechanism of the existing caulking device can be used, and there is an advantage that the equipment cost is not increased significantly.

  1 to 9 show an embodiment of the present invention. FIG. 1 is a front view of a caulking device, FIG. 2 is a perspective view of a pressing die, FIG. 3 is a plan view of an engaging groove, and FIGS. Is a partial front view showing the operation of the caulking device, and FIGS. 7 to 9 are partial side sectional views showing the operation of the caulking device.

  This crimping apparatus includes a plurality of pressing dies 10 that reduce the diameter of two joints in the axial direction of the joint fitting 1 by caulking, a support plate 20 that supports the respective pressing dies 10 so as to be movable in the radial direction of the joint fitting 1, A rotating plate 30 that moves the mold 10 inward in the radial direction of the fitting 1 and a cylinder 40 that rotates the rotating plate 30 are provided. The support plate 20, the rotating plate 30, and the cylinder 40 are based on a base 50. Is provided.

  Each push die 10 is made of a block-like member extending in the radial direction of the joint fitting 1 and is arranged at equal intervals in the circumferential direction of the joint fitting 1. One end of each pressing die 10 is provided with first and second pressing portions 11 and 12 that perform crimping on one end side and the other end side in the axial direction of the joint fitting 1, respectively. 12 are mutually spaced apart in the axial direction of the joint fitting 1. An engaging portion 13 that engages with the rotating plate 30 is provided at the other end of the pressing die 10, and the engaging portion 13 is formed by a convex spherical surface. Engaging grooves 14 that engage with the support plate 20 are provided on both side surfaces of the pressing die 10 in the width direction, and the engaging grooves 14 are formed to extend in the longitudinal direction of the pressing die 10.

  The support plate 20 is made of a disk-shaped member having an opening at the center, and is disposed on the back side of each pressing die 10. A plurality of grooves 21 are provided on the front surface of the support plate 20 so that the respective pressing dies 10 are engaged with each other so as to be movable in the radial direction. A mating engagement portion 22 is projected.

  The rotating plate 30 is made of a ring-shaped member and is arranged on the back side of the support plate 20. A cam portion 31 that abuts the engaging portion 13 of each push die 10 from the outside in the radial direction is provided at the peripheral portion of the rotating plate 30, and the second pressing member when the rotating plate 30 rotates in one circumferential direction. When 12 is moved radially inward of the rotating plate 30 by the cam portion 31 and the rotating plate 30 is rotated in the other circumferential direction, the second pressing member 12 is rotated by a spring (not shown) while contacting the cam portion 31. The plate 30 moves outward in the radial direction. The cam portion 31 is provided with an engagement groove 32 that engages with the engagement portion 13 of the push die 10, and the push die 10 is guided by the engagement groove 32 of the cam portion 31 when the rotating plate 30 is turned. The joint fitting 1 is tilted in the axial direction. In this case, the engaging groove 32 includes a first groove portion 32a that moves the pressing die 10 from one end in the longitudinal direction to a predetermined position toward the inside in the radial direction of the rotating plate 30, and the other in the longitudinal direction from the first groove portion 32a. A second groove 32b that tilts the pressing die 10 in the axial direction of the rotary plate 30 to the end is formed. As a result, when the rotating plate 30 rotates in one circumferential direction, the pressing die 10 is guided by the first groove portion 32a and moved inward in the radial direction of the rotating plate 30, and then moved to the second groove portion 32b. It is guided and tilts in the axial direction of the rotating plate 30.

  The cylinder 40 is supported by the base 50 so as to be swingable, and the rod 41 is rotatably connected to the periphery of the rotating plate 30. That is, the cylinder 40 rotates the rotating plate 30 in the circumferential direction by sliding the rod 41. That is, the rotation plate 30 and the cylinder 40 form a drive mechanism that drives each push die 10.

  In the caulking device configured as described above, the fitting 1 is arranged at the center of each push die 10 as shown in FIGS. 4 and 7, and is rotated by the cylinder 40 as shown in FIGS. When the plate 30 is rotated in one direction in the circumferential direction, each pressing die 10 is moved radially inward by the cam portion 31 of the rotating plate 30. At that time, the pressing die 10 is directed toward the fitting 1 in a state where the first pressing portion 11 is inclined in one axial direction of the fitting 1 so that the first pressing portion 11 is closer to the fitting 1 side than the second pressing portion 12. Moving. As a result, the first pressing portion 11 is first pressed against the joint fitting 1 to reduce the diameter of one end of the fixing member 1b in the axial direction by caulking, and then the engaging portion 13 of the pressing die 10 is moved to the first position of the engaging groove 32. When the first groove portion 32a moves to the second groove portion 32b, the pressing die 10 tilts toward the other axial direction of the fitting 1 as shown in FIGS. 6 and 9, and the second pressing portion 12 of the pressing die 10. Is pressed against the joint fitting 1 to reduce the diameter of the other end in the axial direction of the fixing member 1b by caulking.

  As described above, according to the present embodiment, after the pressing die 10 is moved inward in the radial direction of the joint fitting 1 so that only the first pressing portion 11 is in pressure contact with the fitting 1, the pressing die 10 is moved. Since the second pressing portion 12 is tilted in the axial direction of the joint metal fitting 1 so as to be in pressure contact with the joint metal fitting 1, the axial direction of the joint metal fitting 1 is achieved by one drive mechanism including the rotating plate 30 and the cylinder 40. After the one end side is crimped, the pressing die 10 can be driven so as to perform the crimping on the other end side in the axial direction of the joint fitting 1, and the structure can be simplified. Thereby, for example, the drive mechanism of the existing caulking device can be used, and there is an advantage that the equipment cost is not increased significantly.

  Further, the rotating plate 30 is provided with a cam portion 31 that moves the pressing die 10 inward in the radial direction of the fitting 1 by moving in the circumferential direction of the fitting 1 while contacting the pressing die 10. 31 is provided with an engagement groove 32 that engages the pressing die 10 so that the pressing die 10 tilts in the axial direction of the fitting 1 when the cam portion 31 moves in the circumferential direction of the fitting 1. According to the configuration, the pressing die 10 can be reliably tilted in the width direction of the joint fitting 1.

The front view of the crimping apparatus which shows one Embodiment of this invention Push-type perspective view Top view of engaging groove Partial front view showing the operation of the caulking device Partial front view showing the operation of the caulking device Partial front view showing the operation of the caulking device Partial side sectional view showing the operation of the caulking device Partial side sectional view showing the operation of the caulking device Partial side sectional view showing the operation of the caulking device Side cross-sectional view of joint fitting and hose Side view showing the operation of a conventional caulking device Side view showing operation of another conventional caulking device

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Joint metal fitting, 10 ... Push type, 11 ... 1st press part, 12 ... 2nd press part, 13 ... Engagement part, 14 ... Engagement groove, 30 ... Turning plate, 31 ... Cam part, 32 ... engagement groove, 40 ... cylinder.

Claims (1)

In a caulking device for a hose fitting, which is provided so as to be movable in the radial direction of the fitting, and reduces the diameter of the fitting with the hose inserted from the outside in the radial direction by caulking.
A pressing die having first and second pressing portions that are respectively crimped on one end side and the other end side in the axial direction of the joint fitting, with an interval in the axial direction of the joint fitting;
After the pressing die is moved radially inward of the fitting so that only the first pressing portion is in pressure contact with the fitting, the pressing die is moved so that the second pressing portion is in pressure contact with the fitting. A drive mechanism that tilts in the axial direction ,
The drive mechanism is provided with a cam part that moves the pressing die toward the inside in the radial direction of the fitting by moving in the circumferential direction of the fitting while contacting the pushing die,
The hose joint fitting is characterized in that the cam portion is provided with an engaging groove that engages the push die so that the push die tilts in the axial direction of the joint fitting when the cam portion moves in the circumferential direction of the joint fitting. Caulking device.

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