JP2021094622A - Positioning jig and positioning method - Google Patents

Abstract

To provide an inexpensive positioning jig capable of positioning a caulking metal fitting to a die.SOLUTION: A positioning jig 10 has an adsorption block 12 adsorbing by magnetic force to an end face 110A in the axial direction of a die 110 caulking a caulking metal fitting 106 to a hose 100, a gauge 14 extending along the axial direction of the die 110 from the adsorption block 12, having a contact with an end face 106A in the axial direction of the caulking metal fitting 106, and positioning the caulking metal fitting 106 to the die 110, and a folder 16 having an attachable/detachable mechanism 30 attachable to/detachable from an attachment part 24 on the opposite side to the die 110 in the axial direction of the adsorption block 12.SELECTED DRAWING: Figure 1

Description

The present invention relates to a positioning jig and a positioning method.

For example, in a hose crimping device that crimps and fixes a socket to a hose, the crimping length of the socket is set.

In Patent Document 1 below, a positioning mark extending all around the circumferential direction of the tubular portion is formed on a tubular portion near one end in the axial direction of a socket arranged on the outer side in the radial direction of the hose, and a camera is used. A device for attaching a hose joint fitting that images a positioning mark is disclosed. In this device, when it is determined by the positioning mark imaged by the camera that one end of the crimping claw is located within the width of the positioning mark, the diameters of the plurality of crimping claws are reduced to form a tubular socket. By crimping the part, the tubular part of the socket is crimped with the crimping length as designed.

JP-A-2017-194139

In the device described in Patent Document 1, a positioning mark is formed on the tubular portion of the socket, and the positioning mark is imaged by a camera to determine that one end of the crimping claw is located within the width of the positioning mark. This will increase equipment costs.

For example, when determining the crimping length of the socket, if the equipment cost is increased, the position of the socket with respect to the crimping claw can be set by an encoder or the like. Here, the encoder is a device that measures a change in mechanical position with a sensor as a position value such as a linear position and outputs position information as an electric signal.

However, for example, small crimping companies use caliper dips to measure the distance from the end face of the crimp claw to the end face of the socket in order to crimp the socket without incurring equipment costs. The socket may be positioned with respect to. In this case, the position of the socket with respect to the crimping claw is difficult to stabilize.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a positioning jig and a positioning method capable of positioning a crimping metal fitting with respect to a die at low cost.

In order to solve the above problems, the positioning jig according to the invention of claim 1 includes a suction block that is magnetically attracted to the axial end face of the die that crimps the crimping metal fitting to the hose, and the suction block. A positioning piece that extends along the axial direction of the die, contacts the end face of the crimping bracket in the axial direction, and positions the crimping bracket with respect to the die, and the die in the axial direction of the suction block. It has a holding portion provided with a detachable mechanism that is detachable with respect to the opposite end portion.

According to the positioning jig according to claim 1, a holding portion is attached to an end portion of the suction block opposite to the die in the axial direction by a detachable mechanism. In this state, by operating the holding portion, the suction block is attracted by magnetic force to the axial end face of the die that crimps the crimping metal fitting to the hose. Then, the axial end surface of the crimping metal fitting is brought into contact with the positioning piece extending from the suction block along the axial direction of the die, and the crimping metal fitting is positioned with respect to the die. At that time, the attachment / detachment mechanism separates the holding portion from the end portion on the opposite side of the die in the axial direction of the suction block, so that the positional relationship between the positioning piece and the axial end surface of the crimping bracket (that is, the contact state). Can be confirmed. After that, by reducing the diameter of the die inward in the radial direction, the crimping metal fitting can be crimped to the hose to obtain a predetermined crimping length of the crimping metal fitting. Further, before crimping the crimping metal fitting, the die may be slightly reduced in diameter inward in the radial direction, and the crimping metal fitting may be temporarily fixed to the hose. Further, before crimping the crimping metal fitting, the positioning jig may be removed from the die by attaching the holding portion to the end portion of the suction block opposite to the die in the axial direction and operating the holding portion. According to the positioning jig, the crimping metal fitting can be positioned with respect to the die at low cost.

The positioning jig according to the invention of claim 2 is the positioning jig according to claim 1, wherein the suction block has a magnet capable of sucking on the die inside a non-magnetic case.

According to the positioning jig according to claim 2, the suction block has a magnet that can be attracted to the die inside the non-magnetic case, and the suction block is attracted to the die by the magnetic force of the magnet. Therefore, it becomes easy to adsorb the suction block to the die and to remove the suction block from the die. Further, by appropriately adjusting the thickness of the case, it is possible to adjust the suction force for attracting the suction block to the die by the magnet.

The positioning jig according to the invention of claim 3 is the positioning jig according to claim 1 or 2, wherein the attachment / detachment mechanism is provided at an end portion of the suction block opposite to the die in the axial direction. It is provided with a female screw portion and a male screw portion provided at an axial end portion of the holding portion and screwed with the female screw portion.

According to the positioning jig according to claim 3, the holding portion is attached to the suction block by rotating the male screw portion of the holding portion and screwing it into the female screw portion of the suction block. Further, by rotating the male screw portion of the holding portion in the loosening direction with respect to the female screw portion of the suction block, the holding portion is separated from the suction block. Therefore, the holding portion can be easily attached to and detached from the suction block.

The positioning jig according to the invention of claim 4 is the positioning jig according to claim 1 or 2, wherein the attachment / detachment mechanism has a groove provided at an axial end of the holding portion and the suction. It has an engaging portion provided at an end portion of the block opposite to the die in the axial direction, supported by an elastic body, and capable of advancing and retreating in a direction of engaging with the groove portion.

According to the positioning jig according to claim 4, the holding portion is attached to the suction block by advancing the engaging portion by the elastic body and engaging the engaging portion with the groove portion. Further, by retracting the engaging portion against the elastic force of the elastic body, the engagement between the engaging portion and the groove portion is released, and the holding portion is separated from the suction block. Therefore, the holding portion can be easily attached to and detached from the suction block.

The positioning jig according to the invention of claim 5 includes a contact portion that contacts the axial end face of the die for crimping the crimping metal fitting to the hose, a fixing means for fixing the contact portion to the end face of the die, and the above. It has a positioning piece that extends from the contact portion along the axial direction of the die, contacts the end face of the crimping metal fitting in the axial direction, and positions the crimping metal fitting with respect to the die.

According to the positioning jig according to claim 5, the contact portion is brought into contact with the axial end face of the die for crimping the crimping metal fitting to the hose, and the contact portion is fixed to the axial end face of the die by fixing means. Then, the axial end surface of the crimping metal fitting is brought into contact with the positioning piece extending from the contact portion along the axial direction of the die, and the crimping metal fitting is positioned with respect to the die. At that time, it is possible to confirm the positional relationship (that is, the contact state) between the positioning piece and the axial end face of the crimping metal fitting in a state where the contact portion is fixed to the axial end face of the die. After that, by reducing the diameter of the die inward in the radial direction, the crimping metal fitting can be crimped to the hose to obtain a predetermined crimping length of the crimping metal fitting. Further, before crimping the crimping metal fitting, the die may be slightly reduced in diameter inward in the radial direction, and the crimping metal fitting may be temporarily fixed to the hose. Further, before crimping the crimping metal fitting, the fixing means for fixing the contact portion to the axial end surface of the die may be released and the positioning jig may be removed from the die. According to the positioning jig, the crimping metal fitting can be positioned with respect to the die at low cost.

The positioning jig according to the invention of claim 6 is the positioning jig according to any one of claims 1 to 5, wherein the positioning piece applies the crimping metal fitting to the hose by the die. The thickness is such that it can be pulled out from between the die and the hose in the tightened state.

According to the positioning jig according to claim 6, the positioning piece has a thickness that can be pulled out from between the die and the hose in a state where the crimping metal fitting is crimped to the hose by the die. After crimping the hose, the positioning piece can be pulled out between the die and the hose. Therefore, it is not necessary to slightly reduce the diameter of the die inward in the radial direction and temporarily fix the crimping bracket to the hose before pulling out the positioning piece from between the die and the hose.

In the positioning method according to the invention of claim 7, the suction block is attached to the axial end surface of the die for crimping the crimping metal fitting to the hose by operating the holding portion with the holding portion mounted on the suction block. In the suction step of attracting by magnetic force and in a state where the holding portion is separated from the suction block, the axial end surface of the crimping metal fitting is brought into contact with a positioning piece extending from the suction block along the axial direction of the die. By doing so, the positioning step of positioning the crimping metal fitting with respect to the die and the crimping fitting by moving the die to the crimping completion position on the inner side in the radial direction and crimping and fixing the crimping metal fitting to the hose. It has a tightening process.

According to the positioning method according to claim 7, by operating the holding portion with the holding portion mounted on the suction block, the suction block is magnetically applied to the axial end surface of the die for crimping the crimping metal fitting to the hose. To be adsorbed by. Further, with the holding portion separated from the suction block, the crimping bracket is brought into contact with the axial end face of the crimping bracket with the positioning piece extending from the suction block along the axial direction of the die. Positioning. Further, the die is moved to the crimping completion position on the inner side in the radial direction, and the crimping metal fitting is crimped and fixed to the hose. With this positioning method, the crimping metal fitting can be positioned with respect to the die at low cost.

The positioning method according to the invention of claim 8 is the positioning method according to claim 7, wherein the die is placed on the side of the crimping metal fitting between the positioning step and the crimping step, and the crimping is completed. By moving the crimping metal fitting to a position radially outside the position and temporarily fixing the crimping bracket to the hose, a mounting step of mounting the holding portion on the suction block, and operating the holding portion. It has a removal step of removing the suction block and the positioning piece from the die and the crimping metal fitting.

According to the positioning method according to the invention of claim 8, after positioning the crimping metal fitting, the die is moved to a position on the side of the crimping metal fitting and radially outside the crimping completion position to move the crimping metal fitting. Temporarily fix it to the hose. Further, by attaching the holding portion to the suction block and operating the holding portion, the suction block and the positioning piece are removed from the die and the crimping metal fitting. In this positioning method, after positioning the crimping metal fitting, the crimping metal fitting is temporarily fixed to the hose, so that the crimping metal fitting is prevented from being displaced with respect to the die.

According to the present invention, the crimping metal fitting can be positioned with respect to the die at low cost.

It is sectional drawing which shows the state which the crimping metal fitting is positioned with respect to the die by the positioning jig which concerns on 1st Embodiment. It is sectional drawing which shows the vicinity of the suction block of the positioning jig which concerns on 1st Embodiment in an enlarged state. It is sectional drawing which shows the state before sucking the suction block of the positioning jig which concerns on 1st Embodiment to a die. It is sectional drawing which shows the state in which the suction block of the positioning jig which concerns on 1st Embodiment is sucked on a die. It is sectional drawing which shows the process of temporarily fixing a crimping metal fitting to a hose in a state where the crimping metal fitting is positioned with respect to a die by the positioning jig which concerns on 1st Embodiment. It is a partial cross-sectional view which shows the state which the holding part was separated from the suction block of the positioning jig which concerns on 1st Embodiment. It is sectional drawing which shows the state which attached the holding part to the suction block of the positioning jig which concerns on 1st Embodiment. It is sectional drawing which shows the process of crimping a crimping metal fitting by reducing the diameter of a die inward in the radial direction in a state where the positioning jig which concerns on 1st Embodiment is removed from a die. It is sectional drawing which shows the state which crimped the crimping metal fitting by reducing the diameter of a die inward in the radial direction. It is sectional drawing which shows the positioning jig which concerns on 2nd Embodiment, and is the figure which shows the state which the holding part was separated from the suction block. It is sectional drawing which shows the positioning jig which concerns on 2nd Embodiment, and is the figure which shows the state which the holding part was attached to the suction block. It is sectional drawing which shows the detachment mechanism used for the positioning jig which concerns on 2nd Embodiment. It is sectional drawing which shows the state which the crimping metal fitting is positioned with respect to the die by the positioning jig which concerns on 3rd Embodiment. It is sectional drawing which shows the step of crimping a crimping metal fitting by reducing the diameter of a die inward in a radial direction in a state where the holding part is separated from the suction block of the positioning jig which concerns on 3rd Embodiment. It is sectional drawing which shows the state which the crimping metal fitting is positioned with respect to the die by the positioning jig which concerns on 4th Embodiment. It is a side view which shows the fixing means which fixes the contact part of the positioning jig which concerns on 4th Embodiment to a die. It is a schematic block diagram which shows the crimping device which crimps a crimping metal fitting with a plurality of dies and fixes it to a hose. It is sectional drawing which shows the state which the crimping metal fitting is positioned with respect to the die by the caliper of the comparative example. It is a front view which shows the caliper of a comparative example. It is sectional drawing which shows the state which crimps a crimping metal fitting with a die after positioning the crimping metal fitting with respect to a die using the caliper of a comparative example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a cross-sectional view showing a state in which the crimping metal fitting is positioned with respect to the die by the positioning jig according to the first embodiment. As shown in FIG. 1, a joint 102 is arranged at one end of the hose 100 in the axial direction. FIG. 1 shows a state before connecting the joint 102 to the hose 100.

The joint 102 is formed in a tubular shape, and a flow path (not shown) through which a fluid (for example, a liquid) passes is formed therein. The joint 102 is provided on the main body 104, the crimping metal fitting 106 provided on one end side of the main body 104 in the axial direction, and the other end side of the main body 104 in the axial direction, and another pipe body (not shown). It is provided with a connecting portion 108 connected to the above. One end of the hose 100 in the axial direction is inserted into the crimping metal fitting 106. In other words, the crimping bracket 106 is extrapolated to the hose 100. Although not shown, a core portion extending from the main body portion 104 along the crimping bracket 106 is provided inside the crimping bracket 106 in the radial direction, and a hose is provided between the core portion and the crimping bracket 106. It is configured so that 100 is inserted. The thickness of the crimping metal fitting 106 is, for example, 1 mm or more and 4 mm or less.

The main body portion 104 has a substantially hexagonal shape at an intermediate portion in the axial direction, and a spanner can be hung on the intermediate portion. Further, the connecting portion 108 is rotatable with respect to the main body portion 104. As an example, the connecting portion 108 is provided with a female screw portion (not shown) to which another pipe body is connected. The outer shape of the connecting portion 108 is formed in a substantially hexagonal shape, and it is possible to hang a spanner on the connecting portion 108 when rotating the connecting portion 108.

FIG. 17 shows a side view of the crimping device 114 for crimping the crimping metal fitting 106 as viewed from the axial direction of the crimping metal fitting 106. As shown in FIG. 17, the crimping device 114 is provided with a plurality of (8 in this embodiment) dies 110. The die 110 has a substantially fan shape in the axial direction of the crimping metal fitting 106 shown in FIG. The plurality of dies 110 are arranged side by side in a substantially cylindrical shape so as to surround the crimping metal fitting 106. In other words, the plurality of dice 110 are arranged radially with respect to the central portion. A gap is provided between the adjacent dies 110 in the state before the crimping metal fitting 106 is crimped. The inner side surfaces 110B on the inner side in the radial direction of the plurality of dies 110 are formed in a substantially arc shape along the circumferential direction of the crimping metal fitting 106. Further, at one end of the die 110 in the axial direction, a protruding portion 110C protruding from the outside in the radial direction along the axial direction of the hose 100 is formed (see FIG. 1).

The plurality of dies 110 are supported so as to be movable inward in the radial direction with respect to the tubular guide portion 112. The crimping device 114 is configured such that a plurality of dies 110 are moved inward in the radial direction (that is, the diameter is reduced) by a driving device (not shown). As an example, a tapered surface whose inner diameter gradually decreases is formed inside the guide portion 112, and by moving the guide portion 112 and the plurality of dies 110 relatively in the axial direction, the plurality of dies 110 have radii. The diameter is reduced inward in the direction. By reducing the diameter of the plurality of dies 110 inward in the radial direction (upper side in the vertical direction in FIG. 1), the crimping metal fitting 106 is crimped and fixed to the hose 100.

As shown in FIGS. 1 and 3, the positioning jig 10 includes a suction block 12 that is magnetically attracted to the axial end surface 110A of the die 110 and a positioning piece that extends from the suction block 12 along the axial direction of the die 110. It is provided with a gauge 14 as an example. Further, the positioning jig 10 is a folder as an example of a mounting portion 24 provided at an end portion of the suction block 12 opposite to the die 110 in the axial direction and a holding portion that is detachable from the mounting portion 24. 16 and. In FIG. 1, one die 110 is shown for easy understanding of the configuration.

The suction block 12 has a tubular case 20 and a magnet 22 arranged inside the case 20 (see FIG. 2). The case 20 is made of a non-magnetic material such as a resin or an aluminum alloy. In this embodiment, the case 20 is made of resin. The magnet 22 can be attracted to the metal die 110 via the case 20. As a result, the suction block 12 is magnetically attracted to the axial end surface 110A of the die 110 (in this embodiment, the end surface on the hose 100 side).

In the suction block 12, the suction force of the magnet 22 to the end face 110A of the die 110 can be adjusted by adjusting the thickness of the case 20. In other words, by arranging the magnet 22 inside the case 20, the suction block 12 is placed in a state where the magnet 22 is floated with respect to the end face 110A of the die 110 without directly contacting the end face 110A of the die 110. It is configured to be adsorbed on the end face 110A of the die 110. Since the magnetic force of the magnet 22 is too strong as it is, the magnetic force can be controlled by attracting the magnet 22 to the end face 110A of the die 110 in a floating state via the case 20.

The mounting portion 24 has a tubular shape, and is provided on the side of the suction block 12 opposite to the side to be sucked by the die 110 in the case 20. At the ends of the attachment portion 24 and the rod 28 described later of the folder 16, a attachment / detachment mechanism 30 that allows the rod 28 of the folder 16 to be attached / detached to / from the attachment portion 24 is provided (see FIG. 2). The attachment / detachment mechanism 30 will be described later.

As shown in FIGS. 2 and 3, the gauge 14 is a rod-shaped member, and one end 14A of the gauge 14 is attached to the case 20. As an example, the outer surface of the case 20 is provided with a recess into which the end 14A of the gauge 14 is fitted, and the end 14A of the gauge 14 is fitted into the recess of the case 20 by adhesion or the like. It is fixed to. The tip portion 14B as the other end portion of the gauge 14 extends from the suction block 12 in the direction opposite to the mounting portion 24. The thickness of the gauge 14 in the radial direction of the crimping metal fitting 106 is, for example, 1 mm or more and 3 mm or less. The gauge 14 may be a plate-shaped member that curves along the inner surface of the die 110 instead of the rod-shaped member.

In the present embodiment, the distance from the axial end surface 20A of the case 20 to the tip end portion 14B of the gauge 14 is set to be the position of the crimping metal fitting 106 with respect to the end surface 110A of the die 110. As a result, in the positioning jig 10, the suction block 12 is brought into contact with the tip portion 14B of the gauge 14 in the axial direction of the die 110, and the end face 106A of the crimping metal fitting 106 is brought into contact with the end face 106A in the axial direction. The crimping metal fitting 106 is positioned with respect to the die 110 (see FIG. 1).

The folder 16 includes a main body portion 26 and a rod 28 extending from the main body portion 26. The outer diameter of the tip portion of the rod 28 is smaller than the outer diameter of the intermediate portion of the rod 28. The attachment / detachment mechanism 30 includes a female screw portion 32 formed in the attachment portion 24 of the suction block 12, and a male screw portion 34 formed in the tip end portion of the rod 28 and screwed into the female screw portion 32. In the attachment / detachment mechanism 30, the rod 28 of the folder 16 is attached to the attachment portion 24 of the suction block 12 by screwing (that is, tightening) the male screw portion 34 of the rod 28 to the female screw portion 32 of the attachment portion 24 of the suction block 12. (See Fig. 2). Further, the rod 28 of the folder 16 is separated from the mounting portion 24 of the suction block 12 by loosening and removing the male screw portion 34 of the rod 28 from the female screw portion 32 of the mounting portion 24 of the suction block 12 (see FIG. 6).

In the present embodiment, a plurality of threads are screwed into the male threaded portion 34 of the rod 28 and the female threaded portion 32 of the mounting portion 24 of the suction block 12. Instead of this configuration, the male screw portion 34 of the rod 28 and the female screw portion 32 of the attachment portion 24 of the suction block 12 are screwed by about 1 to 2 threads to bring the rod 28 of the folder 16 into the suction block 12. It may be configured to be attached to the attachment portion 24.

Next, the operation and effect of this embodiment will be described.

A method (positioning method) of positioning the crimping metal fitting 106 with respect to the die 110 by using the positioning jig 10 will be described. As shown in FIG. 3, in the positioning jig 10, the male screw portion 34 of the rod 28 is screwed into the female screw portion 32 of the attachment portion 24 of the suction block 12, so that the rod 28 of the folder 16 is attached to the suction block 12. It is assumed that it is attached to the portion 24 (that is, it is attached). Then, by grasping and operating the main body 26 of the folder 16, the suction block 12 is moved in the direction of suction to the end face 110A of the die 110. Further, a crimping metal fitting 106 of the joint 102 is extrapolated to one end of the hose 100 in the axial direction. As an example, in the crimping device 114, a crimping metal fitting 106 is preliminarily inserted inside a plurality of dies 110 in the radial direction.

Next, as shown in FIG. 4, by grasping and operating the main body 26 of the folder 16, the end face 20A of the case 20 of the suction block 12 is brought into contact with the end face 110A of the die 110, and the magnetic force of the magnet 22 causes the end face 20A to come into contact with the die 110. The suction block 12 is sucked onto the end face 110A of the die 110. Then, the gauge 14 extending from the suction block 12 is brought into contact with the inner side surface 110B of the die 110. As a result, the gauge 14 extending from the suction block 12 is arranged along the axial direction of the die 110. In this state, the tip portion 14B of the gauge 14 and the axial end surface 110A of the die 110 are not in contact with each other.

Then, as shown in FIG. 1, by moving the crimping metal fitting 106 together with the hose 100 along the axial direction, the tip portion 14B of the gauge 14 has an axial end surface 106A of the crimping metal fitting 106 (the end surface on the hose 100 side). ) To contact. As a result, the axial end surface 106A (end surface on the hose 100 side) of the crimping metal fitting 106 of the crimping metal fitting 106 becomes a predetermined distance with respect to the end surface 110A of the die 110.

In this state, the position of the crimping metal fitting 106 is not stable with respect to the end face 110A of the die 110. Therefore, as shown in FIGS. 5 and 6, the male screw portion 34 of the rod 28 is loosened and removed from the female screw portion 32 of the attachment portion 24 of the suction block 12, so that the rod 28 of the folder 16 is attached to the suction block 12. It is separated from the part 24. As a result, the folder 16 is removed from the mounting portion 24 of the suction block 12, so that the positional relationship (contact) between the tip portion 14B of the gauge 14 and the axial end surface 106A of the crimping bracket 106 from the space in the axial direction of the die 110. Relationship) can be confirmed (visualized). After the rod 28 of the folder 16 is separated from the mounting portion 24 of the suction block 12, the end surface 106A of the crimping metal fitting 106 may be brought into contact with the tip portion 14B of the gauge 14.

After confirming that the positional relationship between the tip portion 14B of the gauge 14 and the axial end surface 106A of the crimping bracket 106 is appropriate, as shown in FIG. 5, a plurality of dies 110 are placed inside in the radial direction (arrow A). The diameter is slightly reduced in the direction). At this time, the plurality of dies 110 are moved to positions that are inside in the radial direction and are radially outside from the crimping completion position. As a result, the crimping metal fittings 106 are slightly crimped by pressing the plurality of dies 110 to temporarily fix them to the hose 100. Therefore, the position of the crimping metal fitting 106 with respect to the end surface 110A of the die 110 is stable, and the crimping metal fitting 106 is positioned more appropriately. In this state, since the crimping metal fitting 106 is temporarily fixed to the hose 100, the crimping metal fitting 106 is prevented from moving with respect to the hose 100.

In this state, if a backstop for suppressing the movement of the crimping metal fitting 106 of the joint 102 in the axial direction (direction away from the positioning jig 10) is required, the crimping metal fitting 106 of the joint 102 is used. A backstop member (not shown) is abutted against the end surface of the connecting portion 108 on the opposite side. When the backstop of the joint 102 is unnecessary, the positioning jig 10 shown in FIG. 7 is detached and the crimping metal fitting 106 shown in FIG. 8 is crimped as it is.

As shown in FIG. 7, the main body 26 of the folder 16 is gripped and rotated, and the male screw portion 34 of the rod 28 is screwed into the female screw portion 32 of the attachment portion 24 of the suction block 12, so that the rod 28 of the folder 16 is screwed. Is attached to the attachment portion 24 of the suction block 12.

Then, as shown in FIG. 8, by grasping the main body 26 of the folder 16 and pulling it in the direction of the arrow, the suction block 12 is separated from the end face 110A of the die 110, and the positioning jig 10 is separated from the die 110. In this state, as shown in FIG. 9, the plurality of dies 110 are reduced in diameter inward in the radial direction (in the direction of arrow A) to the crimping completion position, and the crimping metal fittings 106 are crimped by pressing the plurality of dies 110. Fix to hose 100.

By using the positioning jig 10, the crimping metal fitting 106 is positioned with respect to the end surface 110A of the die 110. Then, after removing the positioning jig 10 from the dies 110, the plurality of dies 110 are reduced in diameter in the radial direction to crimp and fix the crimping metal fitting 106 to the hose 100, whereby a predetermined crimping metal fitting is used. A crimping length of 106 can be obtained. Therefore, according to the positioning jig 10, the crimping metal fitting 106 can be positioned with respect to the die 110 at a lower cost than when the crimping metal fitting is positioned with respect to the die using an encoder or the like.

Further, in the positioning jig 10, the suction block 12 has a magnet 22 that can be attracted to the die 110 inside the non-magnetic case 20, and the suction block 12 is attracted to the die 110 by the magnetic force of the magnet 22. This makes it easy to suck the suction block 12 onto the die 110 and remove the suction block 12 from the die 110. Further, by adjusting the thickness of the case 20, the suction force for attracting the suction block 12 to the die 110 by the magnet 22 can be adjusted.

Further, in the positioning jig 10, the attachment / detachment mechanism 30 is provided at the female screw portion 32 provided on the attachment portion 24 on the side opposite to the die 110 in the axial direction of the suction block 12 and at the end of the rod 28 of the folder 16. It is provided with a male screw portion 34. As a result, the folder 16 is attached to the suction block 12 by screwing the male screw portion 34 provided on the rod 28 of the folder 16 into the female screw portion 32 of the attachment portion 24 of the suction block 12. Further, the folder 16 is separated from the suction block 12 by rotating the male screw portion 34 provided on the rod 28 of the folder 16 in the loosening direction with respect to the female screw portion 32 of the attachment portion 24 of the suction block 12. Therefore, the folder 16 can be easily attached to and detached from the suction block 12.

Further, according to the positioning method of the present embodiment, by operating the folder 16 with the folder 16 mounted on the suction block 12, the suction block 12 is attached to the axial end surface 110A of the die 110 by the magnetic force of the magnet 22. Adsorb. Further, the axial end surface 106A of the crimping metal fitting 106 is brought into contact with the tip portion 14B of the gauge 14 extending from the suction block 12 along the axial direction of the die 110, and the crimping metal fitting 106 is positioned with respect to the die 110. .. Then, the folder 16 is separated from the suction block 12, and the die 110 is moved to a position on the side of the crimping metal fitting 106 and radially outside the crimping completion position, whereby the crimping metal fitting 106 is temporarily attached to the hose 100. Stop. Further, the folder 16 is attached to the suction block 12, and the main body 26 of the folder 16 is operated to remove the positioning jig 10 from the die 110 and the crimping metal fitting 106. Then, by moving the die 110 to the crimping completion position on the inner side in the radial direction, the crimping metal fitting 106 is crimped and fixed to the hose 100. In this positioning method, the crimping metal fitting 106 can be positioned with respect to the die 110 at a lower cost than when the crimping metal fitting is positioned with respect to the die using an encoder or the like.

FIG. 18 shows a method of positioning the crimping metal fitting 106 with respect to the axial end surface 110A of the die 110 using the caliper 200 of the comparative example.

As shown in FIGS. 18 and 19, the caliper 200 includes a plate-shaped main body 202 and dips 204 extending from the longitudinal end face 202A of the main body 202. The dips 204 is composed of a short portion 204A having a short length and a long portion 204B having a length longer than that of the short portion 204A. The caliper 200 uses the end surface 202A of the main body 202 as a reference surface, and brings the end surface 202A of the main body 202 into contact with the axial end surface 110A of the die 110. Then, the axial end surface 106A of the crimping metal fitting 106 is brought into contact with the tip surface of the long portion 204B of the dips 204 extending from the end surface 202A of the main body portion 202, and the crimping metal fitting 106 is positioned with respect to the die 110.

After that, as shown in FIG. 20, with the caliper 200 removed from the die 110, the plurality of dies 110 are reduced in diameter to the crimping completion position on the inner side in the radial direction, and the crimping metal fitting 106 is crimped to the hose 100. Fix it.

However, in the positioning method using the caliper 200, the position of the caliper 200 is difficult to stabilize because the small end surface 202A of the main body portion 202 of the caliper 200 is brought into contact with the end surface 110A in the axial direction of the die 110 as a reference surface. Further, since the dips 204 are thinner than the main body 202 and the dips 204 are arranged on the back side of the die 110 with respect to the main body 202, the tip surface of the long portion 204B of the dips 204 is crimped. It is difficult to hit the end face 106A of the metal fitting 106. Therefore, it is difficult to tell whether or not the tip surface of the long portion 204B of the dips 204 hits the end surface 106A of the crimping bracket 106 (low visibility). Further, after positioning the crimping metal fitting 106 with respect to the die 110, the crimping metal fitting 106 tends to rattle, and it is necessary to remove the caliper 200 from the die 110 in this state. When the caliper 200 is removed from the die 110, the crimping metal fitting 106 may move back and forth in the axial direction with respect to the die 110, and the crimping position of the crimping metal fitting 106 is likely to shift.

On the other hand, in the positioning jig 10 of the present embodiment, the suction block 12 provided with the magnet 22 is attracted to the end face 110A of the die 110, so that the position of the suction block 12 is stabilized. Further, since the folder 16 is detachable from the suction block 12, it is easy to visually recognize whether or not the tip portion 14B of the gauge 14 is in contact with the end surface 106A of the crimping metal fitting 106 by separating the folder 16 from the suction block 12. .. Further, in a state where the tip portion 14B of the gauge 14 is in contact with the end surface 106A of the crimping metal fitting 106, the crimping metal fitting 106 is slightly reduced in diameter and temporarily fixed to the hose 100 to temporarily fix the crimping metal fitting 106 to the die 110. The position can be stabilized.

[Second Embodiment]
Next, the positioning jig of the second embodiment will be described with reference to FIGS. 10 to 12. The same members as those in the first embodiment are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIGS. 10 and 11, the positioning jig 50 is on the side opposite to the suction block 12, the gauge 14, and the protruding side of the gauge 14 in the suction block 12 (on the side sucked by the die 110). It is provided with a cylindrical mounting portion 52 provided at an end portion (on the opposite side). Further, the positioning jig 50 includes a folder 54 as an example of a holding portion that is detachable from the mounting portion 52.

The folder 54 includes a main body portion 26, a rod 28, and a columnar small diameter portion 70 formed at an end portion of the rod 28. The outer diameter of the small diameter portion 70 is smaller than the outer diameter of the rod 28. Further, the outer diameter of the small diameter portion 70 is smaller than the inner diameter of the mounting portion 52, and the small diameter portion 70 can be inserted into the mounting portion 52. The attachment portion 52 of the suction block 12 and the small diameter portion 70 of the folder 54 are provided with a attachment / detachment mechanism 60 that allows the small diameter portion 70 of the folder 54 to be attached / detached to / from the attachment portion 52 of the suction block 12.

As shown in FIG. 12, the attachment / detachment mechanism 60 includes a groove portion 72 formed in the small diameter portion 70 of the folder 54. The groove portion 72 is formed on the peripheral surface of the small diameter portion 70 along the circumferential direction. The groove portion 72 has a substantially V-shape in a cross section along the axial direction. Further, on the peripheral edge of the tip of the small diameter portion 70, a tapered portion 70A having a smaller diameter toward the tip side is formed.

Further, the attachment / detachment mechanism 60 includes an engagement member 62 provided in the attachment portion 52 of the suction block 12 and engaged with the groove portion 72 of the folder 54. The mounting portion 52 is provided with a through hole 52A formed in a direction orthogonal to the axial direction of the mounting portion 52. The engaging member 62 is supported at one end by a pipe body 63 mounted inside the through hole 52A, a support portion 64 that closes the peripheral surface side of the mounting portion 52 inside the pipe body 63, and a support portion 64. It includes a coil spring 66 as an example of an elastic body. Further, the engaging member 62 includes a sphere 68 as an example of the engaging portion provided at the other end of the coil spring 66 (that is, the end opposite to the support portion 64). By being supported by the coil spring 66, the sphere 68 can move forward and backward in the direction of engaging with the groove portion 72 of the small diameter portion 70 of the folder 54.

In the positioning jig 50, as shown in FIG. 10, when the small diameter portion 70 of the folder 54 is inserted into the mounting portion 52, the sphere 68 hits the tapered portion 70A and the coil spring 66 contracts. In this state, the small diameter portion 70 of the folder 54 is further inserted into the mounting portion 52. Then, when the groove portion 72 of the small diameter portion 70 is inserted to the position of the sphere 68, the compression of the coil spring 66 is released and the sphere 68 is engaged with the groove portion 72 (see FIGS. 11 and 12). As a result, the small diameter portion 70 of the folder 54 is attached to the attachment portion 52 of the suction block 12. In this state, by operating the main body 26 of the folder 54, the suction block 12 of the positioning jig 50 is sucked onto the end face 110A (see FIG. 1) of the die 110. The attachment / detachment mechanism 60 may be provided with a lock mechanism that locks the sphere 68 in a state of being engaged with the groove portion 72.

Further, as shown in FIG. 11, an attempt is made to pull out the small diameter portion 70 of the folder 54 from the attachment portion 52 of the suction block 12 with a force stronger than the suction force of the suction block 12 to the end face 110A (see FIG. 1) of the die 110. Then, the sphere 68 slides along the V-shaped inclined surface of the groove portion 72. As a result, the coil spring 66 is compressed, and the engagement between the sphere 68 and the groove portion 72 is released. Further, by pulling out the small diameter portion 70 of the folder 54 from the mounting portion 52 of the suction block 12, the small diameter portion 70 of the folder 54 is separated from the mounting portion 52 of the suction block 12 as shown in FIG.

In the above-mentioned positioning jig 50, the same operation and effect can be obtained by the same configuration as the positioning jig 10 of the first embodiment. Further, since the positioning jig 50 includes an attachment / detachment mechanism 60 for engaging the sphere 68 with the groove portion 72, the folder 54 is attached / detached to / from the attachment portion 52 of the suction block 12 when the small diameter portion 70 of the folder 54 is attached / detached. There is no need to rotate the jig, which improves operability.

[Third Embodiment]
Next, the positioning jig of the third embodiment will be described with reference to FIGS. 13 to 14. The same members as those in the first and second embodiments are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIG. 13, the positioning jig 80 includes a suction block 12 and a gauge 82 as an example of a positioning piece extending from the suction block 12 along the axial direction of the die 110. Further, the positioning jig 80 is attached / detached to / from the mounting portion 24 provided at the end of the suction block 12 on the side opposite to the protruding side of the gauge 82 (the side opposite to the side sucked by the die 110). It includes a folder 16 that is detachable from the mounting portion 24 by the mechanism 30.

The gauge 82 is a rod-shaped member, and one end 82A of the gauge 82 is attached to a recess of the case 20 in the suction block 12 by adhesion or the like. The tip end portion 82B as the other end portion of the gauge 82 extends from the suction block 12 in the direction opposite to the mounting portion 24. The thickness of the gauge 82 in the radial direction of the crimping metal fitting 106 is thinner than that of the gauge 14 of the first and second embodiments, and is, for example, 0.5 mm or more and 1 mm or less. More specifically, the thickness of the gauge 82 in the radial direction of the crimping metal fitting 106 is a thickness that can be pulled out from between the die 110 and the hose 100 in a state where the crimping metal fitting 106 is crimped to the hose 100 by the die 110. Is set to. In other words, the thickness of the gauge 82 in the radial direction of the crimping metal fitting 106 is set to a thickness that does not damage the gauge 82 by the die 110 in a state where the die 110 is reduced in diameter to the crimping completion position on the inner side in the radial direction. ..

In the positioning jig 80, as shown in FIG. 13, the end surface 106A of the crimping metal fitting 106 is brought into contact with the tip end portion 82B of the gauge 82 in a state where the suction block 12 is attracted to the end surface 110A of the die 110. Then, the crimping metal fitting 106 is positioned with respect to the die 110. At this time, the folder 16 is separated from the mounting portion 24 of the suction block 12, and the positional relationship (contact relationship) between the tip portion 82B of the gauge 82 and the end surface 106A of the crimping metal fitting 106 is confirmed.

Then, as shown in FIG. 14, the crimping metal fitting 106 is crimped by reducing the diameter of the plurality of dies 110 to the crimping completion position on the inner side in the radial direction without removing the suction block 12 and the gauge 82 from the dies 110. Tighten and fix to hose 100. At that time, the thickness of the gauge 82 in the radial direction of the crimping metal fitting 106 is set to a thickness that can be pulled out from between the die 110 and the hose 100 in a state where the crimping metal fitting 106 is crimped to the hose 100 by the die 110. ing. Therefore, even if the crimping metal fitting 106 is crimped with the die 110, the gauge 82 is not damaged. After crimping the crimping bracket 106 and fixing it to the hose 100, the die 110 is returned to the original position before crimping, and the suction block 12 and the gauge 82 are removed from the die 110.

In the above-mentioned positioning jig 80, the same operation and effect can be obtained by the same configuration as the positioning jig 10 of the first embodiment. Further, in the positioning jig 80, since the crimping metal fitting 106 can be crimped and fixed to the hose 100 without removing the suction block 12 and the gauge 82 from the die 110, the operation at the time of crimping the crimping metal fitting 106 Sex improves.

[Fourth Embodiment]
Next, the positioning jig of the fourth embodiment will be described with reference to FIGS. 15 to 16. The same members as those in the first to third embodiments are designated by the same reference numerals, and duplicate description will be omitted.

As shown in FIG. 15, the positioning jig 150 includes a contact portion 152 that contacts the axial end surface 120A of the die 120 that crimps the crimping metal fitting 106 to the hose 100, and a contact portion 152 that attaches the contact portion 152 to the mounting portion 122 of the die 120. It is provided with a bolt 160 as an example of a fixing means for fixing to. Further, the positioning jig 150 includes a gauge 154 as an example of a positioning piece extending from the contact portion 152 along the axial direction of the die 120.

As shown in FIGS. 15 and 16, the contact portion 152 has a plate shape and is configured to make surface contact with the axial end surface 120A of the die 120. The contact portion 152 is formed with a substantially U-shaped notch portion 153 cut out from the edge portion (see FIG. 16). The notch 153 opens toward the lower side of the contact portion 152 (that is, the outer side in the radial direction of the die 120). The diameter between the walls of the notch 153 is smaller than the outer diameter of the head 160A of the bolt 160 and larger than the outer diameter of the shaft 160B of the bolt 160. The mounting portion 122 of the die 120 is formed with a screw hole 124 into which the shaft portion 160B of the bolt 160 is tightened. The screw hole 124 is an example of the fixing means.

The contact portion 152 of the positioning jig 150 can be removed from the mounting portion 122 of the die 120 by the bolt 160. More specifically, with the shaft portion 160B of the bolt 160 screwed into the screw hole 124 and the bolt 160 loosened, the edge portion of the notch portion 153 in the contact portion 152 is set to the head portion 160A of the bolt 160 and the mounting portion 122. It can be inserted between and. At this time, the edge portion of the notch portion 153 in the contact portion 152 is fitted into the shaft portion 160B of the bolt 160 from above to below. Then, by tightening the bolt 160 into the screw hole 124, the contact portion 152 is fixed to the end face 120A of the die 120 (see FIG. 15). Further, with the bolt 160 loosened, the edge portion of the notch portion 153 in the contact portion 152 can be pulled out from between the head 160A of the bolt 160 and the mounting portion 122.

The gauge 154 is composed of, for example, a rod-shaped member, and is bent in a direction substantially orthogonal to the contact portion 152. The crimping bracket 106 is positioned with respect to the die 120 by bringing the axial end surface 106A of the crimping bracket 106 into contact with the tip portion 154A of the gauge 154. The thickness of the gauge 154 in the radial direction of the crimping bracket 106 is, for example, 1 mm or more and 3 mm or less.

In the above-mentioned positioning jig 150, the same operation and effect can be obtained by the same configuration as the positioning jig 10 of the first embodiment. Further, since the positioning jig 150 includes the contact portion 152 and the gauge 154, the structure is simple. Further, the contact portion 152 of the positioning jig 150 includes a notch portion 153, and can be easily fixed or removed from the end surface 120A of the die 120 by the bolt 160.

Further, before removing the positioning jig 150, the die 120 may be slightly reduced in diameter inward in the radial direction, and the crimping metal fitting 106 may be temporarily fixed to the hose 100. According to the above-mentioned positioning jig 150, the crimping metal fitting 106 can be positioned with respect to the die 120 at low cost.

The thickness of the gauge 154 in the radial direction of the crimping metal fitting 106 is set to a thickness that can be pulled out from between the die 120 and the hose 100 in a state where the crimping metal fitting 106 is crimped to the hose 100 by the die 120. May be good. As a result, the crimping metal fitting 106 can be crimped and fixed to the hose 100 by reducing the diameter of the dice 120 to the crimping completion position on the inner side in the radial direction without removing the positioning jig 150 from the die 120. , The damage of the gauge 154 can be suppressed.

In the first to third embodiments, the shapes of the suction block 12 and the mounting portions 24 and 52 can be changed. Further, the shapes and components of the folders 16 and 54 can be changed.

Further, in the first to fourth embodiments, the shapes and thicknesses of the gauges 14, 82 and 154 can be changed.

Further, in the first and third embodiments, the female screw portion 32 is provided on the attachment portion 24 of the suction block 12 and the male screw portion 34 is provided on the end of the rod 28 of the folder 16 as the attachment / detachment mechanism 30. , The present invention is not limited to this configuration. For example, as the attachment / detachment mechanism, a male screw portion may be provided at the attachment portion of the suction block, and a female screw portion may be provided at the end of the rod of the folder.

Further, in the second embodiment, as the attachment / detachment mechanism 60, the engagement member 62 is provided on the attachment portion 52 of the suction block 12, and the groove portion in which the sphere 68 of the engagement member 62 is engaged with the small diameter portion 70 of the folder 16. Although 72 is provided, the present invention is not limited to this configuration. For example, as the attachment / detachment mechanism, an engaging portion capable of advancing / retreating by an elastic body may be provided at the end of the rod of the folder, and a groove portion with which the engaging portion is engaged may be provided at the attachment portion of the suction block.

Further, in the first to fourth embodiments, the configuration of the joint 102 can be changed.

Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It is obvious to the trader.

10 Positioning jig 12 Suction block 14 Gauge (positioning piece)
16 folders (holding part)
20 Case 20A End face 22 Magnet 30 Detachment mechanism 32 Female thread 34 Male thread 50 Positioning jig 54 Folder (holding part)
60 Detachment mechanism 66 Coil spring (elastic body)
68 Sphere (engagement part)
72 Groove 80 Positioning jig 82 Gauge (positioning piece)
100 Hose 106 Clamping bracket 106A End face 110 Die 110A End face 120 Die 120A End face 124 Screw hole (fixing means)
150 Positioning jig 152 Contact part 154 Gauge (positioning piece)
160 bolts (fixing means)

Claims (8)

A suction block that is magnetically attracted to the axial end face of the die that crimps the crimping bracket to the hose,
A positioning piece that extends from the suction block along the axial direction of the die, contacts the end face of the crimping bracket in the axial direction, and positions the crimping bracket with respect to the die.
A holding portion having a attachment / detachment mechanism that can be attached / detached to / from the end portion of the suction block opposite to the die in the axial direction.
Positioning jig with. The positioning jig according to claim 1, wherein the suction block has a magnet that can be attracted to the die inside a non-magnetic case. The attachment / detachment mechanism is provided at an end portion of the suction block opposite to the die in the axial direction, and a male screw portion provided at the axial end portion of the holding portion and screwed with the female screw portion. The positioning jig according to claim 1 or 2, further comprising. The attachment / detachment mechanism is provided at the groove portion provided at the axial end of the holding portion and at the end opposite to the die in the axial direction of the suction block, and is supported by the elastic body and in the groove portion. The positioning jig according to claim 1 or 2, further comprising an engaging portion capable of advancing and retreating in the engaging direction. The contact part that contacts the axial end face of the die that crimps the crimping bracket to the hose,
A fixing means for fixing the contact portion to the end face of the die, and
A positioning piece that extends from the contact portion along the axial direction of the die, contacts the end face of the crimping bracket in the axial direction, and positions the crimping bracket with respect to the die.
Positioning jig with. Any of claims 1 to 5, wherein the positioning piece has a thickness that can be pulled out from between the die and the hose in a state where the crimping metal fitting is crimped to the hose by the die. The positioning jig according to item 1. A suction step in which the suction block is magnetically attracted to the axial end face of the die for crimping the crimping metal fitting to the hose by operating the holding portion with the holding portion mounted on the suction block.
With the holding portion detached from the suction block, the axial end face of the crimping metal fitting is brought into contact with the positioning piece extending from the suction block along the axial direction of the die, thereby making the die. The positioning process for positioning the crimping bracket and
A crimping step of moving the die to a crimping completion position on the inner side in the radial direction and crimping and fixing the crimping metal fitting to the hose.
Positioning method having. Between the positioning step and the crimping step,
A temporary fixing step of moving the die to a position on the side of the crimping metal fitting and radially outside the crimping completion position to temporarily fix the crimping metal fitting to the hose.
The mounting process of mounting the holding portion on the suction block, and
A removal step of removing the suction block and the positioning piece from the die and the crimping metal fitting by operating the holding portion.
7. The positioning method according to claim 7.

Images