JP6213672B2 - Ferrule caulking device - Google Patents

Description

  The present invention relates to a ferrule caulking device for caulking a ferrule through which a column is inserted.

  In the gas chromatograph, a carrier gas is introduced into a column from a sample introduction part, and each sample component is separated in the process in which the carrier gas passes through the column. Each sample component separated in the column is detected by a detector connected to the column. The column can be connected to the sample introduction unit and the detector via a column mounting device.

  The column mounting device is provided with, for example, a ferrule, a ferrule receiving portion, and a ferrule pressing portion. The ferrule is attached to the column by being caulked while the column is inserted. And a column can be attached to a column attachment apparatus by inserting and fixing the ferrule attached to the column between a ferrule receiving part and a ferrule press part (for example, refer to the following patent documents 1).

  When the ferrule is caulked and attached to the column, a plurality of types of jigs corresponding to the shape of the ferrule are used. In addition, before the ferrule is caulked using a jig, the column protrusion amount from the ferrule is set by positioning the column with respect to the ferrule.

US Pat. No. 8,128,131

  As described above, conventionally, in order to crimp and attach a plurality of types of ferrules to a column, it is necessary to prepare a plurality of types of jigs corresponding to each ferrule, and the selection of the jigs is complicated. For this reason, it may be difficult to smoothly perform the work of caulking the ferrule and attaching it to the column.

  Further, when the ferrule is caulked and attached to the column, the ferrule needs to be caulked after accurately positioning the column with respect to the ferrule. For positioning the column with respect to the ferrule, for example, it is necessary to measure the protruding amount of the column from the ferrule with a ruler or to cut the tip of the column, which is complicated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a ferrule caulking device that can more smoothly perform the work of caulking the ferrule and attaching it to a column.

  A ferrule caulking device according to the present invention is a ferrule caulking device for caulking a ferrule through which a column is inserted, and includes a main body and a caulking tool. A ferrule having a column inserted therein is accommodated in the main body. The caulking tool is detachable from the main body, and presses and caulks a ferrule accommodated in the main body. The main body includes a plurality of ferrule housing portions and a plurality of pressing guide portions. Each of the plurality of ferrule housing portions can accommodate ferrules having different shapes, and each has a contact portion for contacting and caulking the ferrule accommodated therein. The plurality of pressing guide portions are formed in association with the plurality of ferrule housing portions, respectively, and guide the caulking tool to press the ferrules in the corresponding ferrule housing portions.

  According to such a configuration, after selecting a ferrule housing portion corresponding to the shape of the ferrule from a plurality of ferrule housing portions, housing the ferrule in the ferrule housing portion, and using the caulking tool, the inside of the ferrule housing portion The ferrule can be pressed and crimped. At this time, even if the ferrule is housed in any ferrule housing portion, the common caulking tool can be guided by the pressing guide portion, and the ferrule in the ferrule housing portion can be caulked. In this way, a common main body and caulking tool can be used for a plurality of types of ferrules, and there is no need to select a jig according to the shape of the ferrule. Can be done.

  The caulking tool and the pressing guide part may be attached by screwing one into the other.

  According to such a structure, the ferrule in a ferrule accommodating part can be pressed and crimped only by screwing in one of a caulking tool and a press guide part to the other. In this way, since a plurality of types of ferrules can be caulked with a simple screw-type configuration, the work of caulking the ferrules and attaching them to the column can be performed more smoothly.

  The main body may be formed with a column abutting surface against which a tip of a column inserted through the ferrules respectively accommodated in the plurality of ferrule accommodating portions is abutted.

  According to such a configuration, the column can be positioned with respect to the ferrule simply by abutting the tip of the column inserted through the ferrule against the column contact surface. This makes it possible to easily and accurately set the protruding amount of the column from the ferrule, and if the ferrule is caulked as it is, there is no need to cut the tip of the column, so the ferrule is caulked and attached to the column Work can be performed more smoothly.

  A plurality of the column abutting surfaces may be formed in association with the plurality of ferrule housing portions, respectively. In this case, the distance between the contact portion of each ferrule housing portion and the column contact surface corresponding to each ferrule housing portion may be different.

  According to such a configuration, the protruding amount of the column from the ferrule is automatically set to a different value according to the column contact surface against which the column tip is abutted. Thereby, the protrusion amount of the column from the ferrule can be set to a desired value without performing an operation of cutting the tip of the column.

  The main body may include a first main body portion in which the plurality of ferrule housing portions are formed, and a second main body portion in which the plurality of column contact surfaces are formed. In this case, the combination of the ferrule housing part and the column contact surface may be switched by relatively displacing the first main body part and the second main body part.

  According to such a configuration, the combination of the ferrule housing part and the column abutting surface can be switched by a simple operation of relatively displacing the first main body part and the second main body part. Thereby, even if a ferrule is accommodated in any ferrule accommodating part, the projection amount of the column from the ferrule can be set to a different value only by switching the combination of the column contact surfaces with respect to the ferrule accommodating part. . Therefore, for a plurality of types of ferrules, the protruding amount of the column from each ferrule can be easily set to a desired value.

  The first main body and the second main body may be relatively displaced by being rotated on the same axis.

  According to such a configuration, the first main body portion and the second main body portion are relatively displaced by a simple and easily understandable operation by simply rotating the first main body portion and the second main body portion on the same axis, and the ferrule The combination of the accommodating portion and the column contact surface can be switched.

  The first main body portion and the second main body portion may be composed of regular polygons having the same cross-sectional shape.

  According to such a configuration, when the first main body portion and the second main body portion are rotated on the same axis and relatively displaced, regardless of the combination of the ferrule housing portion and the column contact surface, The outer peripheral surfaces of the first main body and the second main body can be associated with each other. Thereby, a main body can be made into the shape which is easy to adjust to an operator's hand. In addition, unlike the case where the cross-sectional shape of the main body is circular, the main body can be prevented from rolling when the main body is placed on a desk or the like.

  The main body may include a stopper that restricts relative displacement of the first main body portion and the second main body portion at a position where the ferrule housing portion and the column contact surface face each other.

  According to such a configuration, when the first main body portion and the second main body portion are relatively displaced, the ferrule housing portion and the column contact surface can be reliably opposed to each other by the stopper. Therefore, since the tip of the column inserted through the ferrule can be reliably abutted against the column contact surface, positioning of the column with respect to the ferrule can be performed reliably and easily.

  The column contact surface may be visible from the outside by forming at least a part of the main body to be transparent or translucent.

  According to such a configuration, it can be confirmed from the outside whether or not the tip of the column is abutted against the column contact surface. Therefore, since the column can be positioned more reliably with respect to the ferrule, the protruding amount of the column from the ferrule can be set more accurately.

  The component forming the column contact surface may be detachable.

  According to such a configuration, when the column contact surface is dirty, maintenance can be performed by removing the components forming the column contact surface. Therefore, the tip of the column is abutted against the contaminated column contact surface, and foreign matter can be prevented from adhering to the column.

  The caulking tool may include a torque limiter that limits a torque when the ferrule is pressed to a certain value or less.

  According to such a configuration, since the torque limiter is provided in the common caulking tool used when caulking the ferrule, even if the ferrule is accommodated in any ferrule accommodating portion, the ferrule accommodating portion The ferrule can be caulked with a constant pressing force. Therefore, regardless of the type of ferrule, the ferrule can be caulked with an appropriate pressing force at all times, and it is easy for the operator to understand that the ferrule has been sufficiently caulked.

  The caulking tool may be formed with an insertion hole through which the column is inserted, and a groove that extends from the outer peripheral surface of the caulking tool to the insertion hole and can retract the column from the insertion hole.

  According to such a configuration, after the ferrule is caulked and attached to the column inserted through the insertion hole of the caulking tool, the column can be retracted through the groove communicating with the insertion hole. Therefore, there is no case where the ferrule is caught and the column cannot be pulled out from the caulking tool, so that the work of caulking the ferrule and attaching it to the column can be performed more smoothly.

  According to the present invention, a common body and caulking tool can be used for a plurality of types of ferrules, and it is not necessary to select a jig according to the shape of the ferrule. It can be performed more smoothly.

It is a perspective view which shows the structural example of the ferrule caulking apparatus which concerns on 1st Embodiment of this invention. It is sectional drawing of the ferrule caulking apparatus of FIG. It is a fragmentary sectional view of a main part and shows the state where a ferrule was stored in each ferrule storage part. It is sectional drawing of a ferrule crimping apparatus, and has shown the case where the 1st main-body part and the 2nd main-body part are displaced relatively from the state of FIG. It is sectional drawing of a main body, The cross section in the position different from FIG. 2 is shown. It is a perspective view which shows the structural example of a crimping tool. It is a front view of the crimping tool of FIG. It is AA sectional drawing of the crimping tool of FIG. It is a perspective view which shows the modification of a crimping tool. It is a front view of the crimping tool of FIG. It is BB sectional drawing of the crimping tool of FIG. It is a perspective view which shows the structural example of the ferrule caulking apparatus which concerns on 2nd Embodiment of this invention, and has shown the caulking tool abbreviate | omitting. It is a fragmentary sectional view of the ferrule caulking device of FIG.

  FIG. 1 is a perspective view showing a configuration example of a ferrule caulking device 1 according to the first embodiment of the present invention. FIG. 2 is a cross-sectional view of the ferrule caulking device 1 of FIG. The ferrule caulking device 1 is for caulking a ferrule 3 through which a column 2 is inserted, and includes a main body 4 and a caulking tool 5 that can be attached to and detached from the main body 4. Here, caulking is an operation in which the ferrule 3 is plastically deformed by pressurization and attached to the column 2. The ferrule 3 is attached to the column 2 by caulking one end side with the column 2 inserted into the column 2. It is attached.

  The main body 4 is configured, for example, by connecting a first main body portion 41 and a second main body portion 42. The first main body 41 and the second main body 42 are relatively displaced by being rotated on the same axis L1. Specifically, a rotation shaft 43 extending along the axis L <b> 1 is attached to the first main body portion 41, and the second main body portion 42 is rotatably attached to the rotation shaft 43. Thereby, the 1st main-body part 41 and the 2nd main-body part 42 can mutually be rotated centering | focusing on the rotating shaft 43, and a relative position can be changed.

  In this example, the cross-sectional shapes of the first main body portion 41 and the second main body portion 42 are the same regular hexagon. Therefore, when the first main body portion 41 and the second main body portion 42 are rotated on the same axis L1 and are relatively displaced, the first main body portion 41 and the second main body portion 41 and the second main body portion 41 at every predetermined relative angle (for example, every 60 °). The outer peripheral surface of the main body 42 is flush. However, the cross-sectional shapes of the first main body portion 41 and the second main body portion 42 are not limited to regular hexagons, and may be other regular polygons, for example, a shape in which a part of a circle is a flat surface. For example, it may be formed of a shape other than a regular polygon.

  A plurality of concave portions 412 are formed on the end surface 411 of the first main body portion 41 opposite to the second main body portion 42 side. Each recess 412 extends in parallel to the axis L1 and is formed in a different shape. A plurality of pressing guide portions 413 and the same number of ferrule housing portions 414 as the pressing guide portions 413 are formed in the first main body portion 41 by the respective concave portions 412.

  The plurality of pressing guide portions 413 are formed in the same cross-sectional shape, and can guide the common caulking tool 5 into the first main body portion 41. The caulking tool 5 is provided with a gripping part 51 for an operator to grip and a shaft part 52 protruding from the gripping part 51. The shaft portion 52 of the caulking tool 5 can be inserted into each pressing guide portion 413.

  In this example, a thread groove is formed on the outer peripheral surface of the shaft portion 52 of the caulking tool 5. Each pressing guide portion 413 has an inner diameter corresponding to the outer diameter of the shaft portion 52 of the caulking tool 5, and a thread is formed on the inner peripheral surface. Therefore, the caulking tool 5 can be guided in parallel to the axis L1 by screwing the shaft part 52 of the caulking tool 5 into each pressing guide part 413. It is preferable that the outer peripheral surface of the gripping portion 51 of the caulking tool 5 is configured to easily transmit the rotational force of the operator's fingertip by forming a knurl.

  The plurality of ferrule accommodation portions 414 can accommodate the ferrules 3 having different shapes by being formed in different shapes. Each ferrule housing portion 414 is associated with each pressing guide portion 413, and is formed to communicate with each pressing guide portion 413 on the side opposite to the end surface 411 side. In the main body 4, information on the type of the ferrule 3 accommodated in the ferrule accommodation unit 414 may be described in association with each ferrule accommodation unit 414.

  FIG. 3 is a partial cross-sectional view of the main body 4 and shows a state in which the ferrule 3 is accommodated in each ferrule accommodating portion 414. In FIG. 3, the ferrule 3 is accommodated in each ferrule accommodating portion 414 for explanation, but when the ferrule 3 is caulked using the ferrule caulking device 1, any one ferrule accommodating portion 414 is accommodated. In a state where only the ferrule 3 is accommodated, the shaft portion 52 of the caulking tool 5 is screwed into the pressing guide portion 413 corresponding to the ferrule accommodating portion 414.

  The ferrule 3 is a cylindrical member having a tapered end at one end, and the column 2 is inserted into an insertion hole 31 extending in the axial direction. The other end side of the ferrule 3 is formed in a cylindrical shape, and the end surface 32 on the other end side is orthogonal to the direction in which the insertion hole 31 extends (the insertion direction of the column 2). The ferrule 3 is made of, for example, metal, but is not limited to this, and may be made of resin.

  As shown in FIG. 3, the inner diameter of each ferrule housing portion 414 is smaller than the inner diameter of each pressing guide portion 413 and slightly larger than the outer diameter of the ferrule 3 housed in each ferrule housing portion 414. . Each ferrule housing portion 414 communicates with the through hole 416 through the step portion 415 by constricting the bottom thereof. The inner diameter of each through-hole 416 varies depending on the shape of the ferrule 3 accommodated in the corresponding ferrule accommodating portion 414. The larger the inner diameter of the insertion hole 31 of the ferrule 3, the larger the inner diameter of the through-hole 416.

  The through hole 416 passes through the first main body 41 in a direction parallel to the axis L1. The inner diameter of the through hole 416 is slightly larger than the outer diameter of one end portion of the ferrule 3 accommodated in the ferrule accommodation portion 414. Therefore, one end portion of the ferrule 3 accommodated in the ferrule accommodating portion 414 slightly enters the through hole 416, and the outer peripheral surface of the one end portion and the step portion 415 come into contact with each other.

  In a state where the ferrule 3 is accommodated in the ferrule accommodating portion 414 and the outer peripheral surface of one end portion of the tapered ferrule 3 is in contact with the stepped portion 415, the other end portion of the ferrule 3 is moved from the ferrule accommodating portion 414 to the pressing guide portion 413 side. It protrudes. In this state, when the column 2 is inserted into the insertion hole 31 of the ferrule 3 and the shaft portion 52 of the caulking tool 5 is screwed into the pressing guide portion 413, the tip surface of the shaft portion 52 is moved to the ferrule 3 as shown in FIG. Can be brought into contact with the end surface 32 on the other end side.

  By further screwing the caulking tool 5 from this state and guiding the shaft part 52 of the caulking tool 5 by the pressing guide part 413, the end surface 32 on the other end side of the ferrule 3 is pressed by the tip surface of the shaft part 52, One end of the ferrule 3 through which the column 2 is inserted can be caulked at the step 415. At this time, the stepped portion 415 constitutes a contact portion for contacting and caulking the ferrule 3 accommodated in the ferrule accommodating portion 414.

  In this embodiment, after selecting the ferrule accommodation part 414 according to the shape of the ferrule 3 from the plurality of ferrule accommodation parts 414 and accommodating the ferrule 3 in the ferrule accommodation part 414, the caulking tool 5 is used to The ferrule 3 in the ferrule housing part 414 can be pressed and caulked. At this time, even if the ferrule 3 is housed in any ferrule housing portion 414, the common caulking tool 5 can be guided by the pressing guide portion 413, and the ferrule 3 in the ferrule housing portion 414 can be caulked. . As described above, the common main body 4 and caulking tool 5 can be used for a plurality of types of ferrules 3, and it is not necessary to select a jig according to the shape of the ferrule 3. The work of attaching to the can be performed more smoothly.

  In particular, in this embodiment, the ferrule 3 in the ferrule housing part 414 can be pressed and caulked only by screwing the caulking tool 5 into the pressing guide part 413. As described above, since a plurality of types of ferrules 3 can be caulked with a simple screw-type configuration, the operation of caulking the ferrule 3 and attaching it to the column 2 can be performed more smoothly.

  Referring to FIGS. 1 and 2 again, the second main body portion 42 is configured, for example, by connecting a column insertion member 421 and a column abutting member 422 using a fixture 423 such as a screw. A plurality of column insertion holes 424 for inserting the column 2 are formed in the column insertion member 421 so as to extend in parallel to the axis L1.

  A plurality of through-holes 416 communicating with each ferrule housing portion 414 formed in the first main body portion 41 and a plurality of column insertion holes 424 formed in the column insertion member 421 of the second main body portion 42 each have an axis L1. Are formed to extend in parallel at the same distance. Therefore, each column insertion hole 424 can be communicated with an arbitrary through hole 416 by relatively displacing (rotating) the first main body portion 41 and the second main body portion 42.

  An end surface of the column insertion member 421 on the first main body 41 side is formed as a flat surface. On the other hand, the end surface on the column contact member 422 side of the column insertion member 421 is an uneven surface by forming a step in association with each column insertion hole 424. Thereby, each column penetration hole 424 has mutually different length. The end surface on the column insertion member 421 side of the column contact member 422 is an uneven surface corresponding to the end surface of the column insertion member 421 that contacts, and each column insertion hole 424 is closed by the end surface.

  An end surface (uneven surface) on the column insertion member 421 side of the column contact member 422 constitutes a column contact surface 425. A plurality of column contact surfaces 425 are formed in association with the plurality of ferrule housing portions 414, respectively, and the tip of the column 2 inserted through the ferrule 3 housed in each of the plurality of ferrule housing portions 414 is abutted. . That is, the column 2 inserted through the ferrule 3 in the ferrule housing part 414 is inserted into the column insertion hole 424 communicating with the through hole 416 through the through hole 416 communicating with the ferrule housing part 414, and the tip thereof is Contact the column contact surface 425.

  In this embodiment, the column 2 can be positioned with respect to the ferrule 3 simply by abutting the tip of the column 2 inserted through the ferrule 3 against the column contact surface 425. Thereby, the protrusion amount of the column 2 from the ferrule 3 can be set easily and accurately. If the ferrule 3 is caulked as it is, there is no need to cut the tip of the column 2, so the ferrule 3 The operation of caulking and attaching to the column 2 can be performed more smoothly.

  In the present embodiment, since the lengths of the column insertion holes 424 are different as described above, the distance between the stepped portion 415 of each ferrule housing portion 414 and the column contact surface 425 corresponding to each ferrule housing portion 414. Is also different. Therefore, the protrusion amount of the column 2 from the ferrule 3 is automatically set to a different value according to the column contact surface 425 against which the tip of the column 2 is abutted. Thereby, without performing the operation | work which cut | disconnects the front-end | tip part of the column 2, the protrusion amount of the column 2 from the ferrule 3 can be set to a desired value.

  The column insertion member 421 is made of, for example, a transparent member. Thereby, the column contact surface 425 can be visually recognized from the outside through the transparent column insertion member 421, and it is confirmed from the outside whether or not the tip of the column 2 is abutted against the column contact surface 425. can do. Therefore, since the positioning of the column 2 with respect to the ferrule 3 can be performed more reliably, the protruding amount of the column 2 from the ferrule 3 can be set more accurately.

  In this embodiment, the column abutting member 422 forming the column abutting surface 425 can be attached to and detached from the column insertion member 421 by attaching and detaching the fixing tool 423 described above. Therefore, when the column contact surface 425 becomes dirty, maintenance can be performed by removing the column contact member 422 forming the column contact surface 425. As a result, the tip of the column 2 is abutted against the dirty column contact surface 425, and foreign matter can be prevented from adhering to the column 2.

  However, the column insertion member 421 is not limited to being transparent, and may be translucent. Moreover, if each column contact surface 425 is visible from the outside, not only the structure in which the column insertion member 421 is formed to be transparent or translucent but the other part of the main body 4 is formed to be transparent or translucent. It may be a configuration. Moreover, it is sufficient that at least a part of the main body 4 is transparent or translucent. For example, the entire main body 4 may be transparent or translucent.

  In this embodiment, each column insertion hole 424 extends linearly in the column insertion member 421, but is not limited thereto. That is, the path of the column 2 from the ferrule housing part 414 to the column contact surface 425 is not limited to a straight line, but may be an arbitrary shape such as a curved line or a spiral. Further, the plurality of column insertion holes 424 are not limited to the configuration arranged to be parallel to each other, and can be arranged at arbitrary positions in the column insertion member 421.

  The second main body portion 42 is not limited to a configuration in which the column insertion member 421 and the column contact member 422 are detachably provided. For example, the second body portion 42 has a configuration in which the column insertion member 421 and the column contact member 422 are integrally formed. May be.

  FIG. 4 is a cross-sectional view of the ferrule caulking device 1 and shows a case where the first main body 41 and the second main body 42 are relatively displaced from the state of FIG. As shown in FIGS. 2 and 4, in this embodiment, each column insertion hole 424 is formed by a simple and easily understandable operation by simply rotating the first main body 41 and the second main body 42 on the same axis L1. The combination of the ferrule housing part 414 and the column contact surface 425 can be switched by communicating with an arbitrary through hole 416.

  Thereby, even if the ferrule 3 is accommodated in any ferrule accommodating part 414, the amount of protrusion of the column 2 from the ferrule 3 can be changed by simply switching the combination of the column contact surface 425 with respect to the ferrule accommodating part 414. Can be set to Therefore, for a plurality of types of ferrules 3, the protruding amount of the column 2 from each ferrule 3 can be easily set to a desired value.

  In addition, since the first main body 41 and the second main body 42 have the same regular polygonal shape (for example, a regular hexagon), the first main body 41 and the second main body 42 are rotated on the same axis L1. When the relative displacement is performed, the outer peripheral surfaces of the first main body portion 41 and the second main body portion 42 can be associated with each other regardless of the combination of the ferrule housing portion 414 and the column contact surface 425. . Thereby, the main body 4 can be made into the shape which is easy to adjust to an operator's hand. Further, unlike the case where the cross-sectional shape of the main body 4 is circular, the main body 4 can be prevented from rolling when the main body 4 is placed on a desk or the like.

  FIG. 5 is a cross-sectional view of the main body 4 and shows a cross section at a position different from that in FIG. The first main body 41 is provided with a stopper 44 for restricting relative displacement between the first main body 41 and the second main body 42. The stopper 44 is attached so as to protrude from the end surface of the first main body portion 41 on the second main body portion 42 side.

  A concave portion 441 for accommodating the stopper 44 protruding from the first main body 41 is formed on the end surface of the second main body 42 on the first main body 41 side. In a state where the stopper 44 is accommodated in the recess 441, the first main body portion 41 and the second main body portion 42 cannot be relatively rotated on the axis L1, and the ferrule accommodating portion 414 and the column contact surface 425 are not provided. It is maintained at positions facing each other.

  In this example, a plurality of recesses 441 are provided. Each concave portion 441 can accommodate the stopper 44 in a state where the ferrule accommodating portion 414 and the column contact surface 425 face each other in different combinations. Therefore, the combination of the ferrule housing portion 414 and the column contact surface 425 can be switched depending on which concave portion 441 houses the stopper 44.

  As described above, in the present embodiment, when the first main body 41 and the second main body 42 are relatively displaced, the ferrule housing portion 414 and the column contact surface 425 can be reliably opposed to each other by the stopper 44. . Therefore, since the tip of the column 2 inserted through the ferrule 3 can be reliably abutted against the column contact surface 425, the column 2 can be positioned with respect to the ferrule 3 reliably and easily. However, the stopper 44 may be provided not on the first main body 41 but on the second main body 42.

  The second main body portion 42 is slidable in the direction of the axis L <b> 1 with respect to the rotation shaft 43 attached to the first main body portion 41. The rotation shaft 43 is covered with, for example, a compression spring 431. One end of the compression spring 431 is locked to the rotating shaft 43 and the other end is locked to the second main body 42. Thereby, the 2nd main-body part 42 is urged | biased toward the 1st main-body part 41 side, and is closely_contact | adhering with the 1st main-body part 41, as shown in FIG.

  From the state shown in FIG. 5, the stopper 44 is moved from the inside of the recess 441 by sliding the second main body portion 42 to the side opposite to the first main body portion 41 side against the biasing force of the compression spring 431. Can be evacuated. As a result, the first main body 41 and the second main body 42 can be relatively displaced (rotated). In this state, after making the stopper 44 face another recess 441, the second main body 42 is slid toward the first main body 41 by the biasing force of the compression spring 431, so that the stopper 44 is accommodated in the recess 441. The combination of the ferrule housing part 414 and the column contact surface 425 is switched.

  However, the urging member that urges the second main body portion 42 toward the first main body portion 41 is not limited to the compression spring 431, and may be configured by an elastic body other than the compression spring 431, or elastic. You may be comprised by members other than a body. Further, the urging member is not limited to the configuration provided in the second main body portion 42, and is provided, for example, in the first main body portion 41 to urge the first main body portion 41 toward the second main body portion 42. It may be a configuration.

  FIG. 6 is a perspective view illustrating a configuration example of the caulking tool 5. FIG. 7 is a front view of the caulking tool 5 of FIG. FIG. 8 is a cross-sectional view of the caulking tool 5 of FIG. The caulking tool 5 includes, for example, a ball plunger 53 in addition to the grip portion 51 and the shaft portion 52 described above.

  The grip 51 includes a main body 511 having, for example, a circular outer peripheral surface, and a rotating unit 512 that covers the outside of the main body 511 and is rotatable with respect to the main body 511. The shaft portion 52 is formed integrally with the main body portion 511 so as to protrude from the center of the main body portion 511 along the axis L2. A recess 513 extending in the radial direction toward the axis L <b> 2 is formed on the outer peripheral surface of the main body 511, and a ball plunger 53 is provided in the recess 513.

  The ball plunger 53 includes, for example, a cylindrical body 530, a ball 531, and a compression spring 532. The ball 531 and the compression spring 532 are accommodated in the cylinder 530. A screw groove is formed on the outer peripheral surface of the cylindrical body 530, and the ball plunger 53 is attached in the recess 513 by screwing the screw groove into a screw thread formed on the inner peripheral surface of the recess 513. The compression spring 532 extends along the recess 513, and one end thereof is in contact with the bottom surface of the cylindrical body 530. The ball 531 is in contact with the other end of the compression spring 532. Thereby, the ball 531 can be pushed into the recess 513 against the urging force of the compression spring 532.

  A through hole 514 for locking the ball 531 is formed in a part of the outer peripheral surface of the rotating portion 512. The through hole 514 has an inner diameter that is smaller than the outer diameter of the ball 531, and the ball does not escape from the through hole 514 to the outside. As shown in FIGS. 7 and 8, the ball 531 is pressed against the peripheral edge of the through hole 514 by the urging force of the compression spring 532, and a part of the ball 531 enters the through hole 514 and is locked.

  In this state, when the shaft portion 52 of the caulking tool 5 is screwed into the pressing guide portion 413 of the main body 4, the main body portion 511 and the rotating portion 512 of the grip portion 51 rotate together. When the tip end surface of the shaft portion 52 abuts on the end surface 32 of the ferrule 3 in the ferrule housing portion 414 and the caulking tool 5 is further screwed in, the rotating portion 512 is moved when a torque greater than a certain value is applied. The ball 531 rotates with respect to the main body 511 and is pushed into the recess 513 by the inner peripheral surface of the rotating part 512.

  In this manner, the ball plunger 53 constitutes a torque limiter that limits the torque when pressing the ferrule 3 to a certain value or less. In this embodiment, since the torque limiter is provided in the common caulking tool 5 used when caulking the ferrule 3, even if the ferrule 3 is accommodated in any ferrule accommodating portion 414, the ferrule accommodation The ferrule 3 in the part 414 can be caulked with a constant pressing force. Therefore, regardless of the type of the ferrule 3, the ferrule 3 can always be caulked with an appropriate pressing force, and it is easy for the operator to understand that the ferrule 3 is sufficiently caulked.

  However, the urging member that urges the ball 531 is not limited to the compression spring 532, and may be constituted by an elastic body other than the compression spring 532, or may be constituted by a member other than the elastic body. There may be. The torque limiter is not limited to the ball plunger 53 using the ball 531, and may be configured such that the ball 531 and the biasing member (for example, the compression spring 532) are directly accommodated in the main body 511. The structure using other members may be used.

  For example, a pair of pins 54 extending in the radial direction is provided on the outer peripheral surface of the main body 511. The pair of pins 54 are symmetrically arranged on both sides with respect to the axis L2. Long holes 515 extending in the circumferential direction are formed at positions facing the pins 54 on the outer peripheral surface of the rotating portion 512.

  As shown in FIG. 7, each pin 54 is located at one end of the long hole 515 in a state where the ball 531 is locked in the through hole 514. In this state, when the ferrule 3 is pressed using the caulking tool 5 and a torque greater than a certain value is applied, the rotating part 512 rotates with respect to the main body part 511. At this time, each pin 54 Comes into contact with the other end of the long hole 515.

  Thereby, since the rotation amount of the rotation part 512 with respect to the main-body part 511 can be restrict | limited, it is easy to return the rotation part 512 to the original position with respect to the main-body part 511 after that. When returning the rotating unit 512 to the original position, the operator holds the main unit 511 by inserting a finger into the opening 516 provided in the main unit 511 and rotates the main unit 511 with respect to the rotating unit 512. By doing so, each pin 54 is returned to one end of the long hole 515.

  However, the pin 54 and the long hole 515 are not limited to one pair, and may be provided one by one, or may be provided by three or more. Further, the pin 54 may be provided on the rotating part 512 side, and the long hole 515 may be provided on the main body part 511 side. Furthermore, it is possible to limit the amount of rotation of the rotating unit 512 relative to the main body unit 511 using a configuration other than the pin 54.

  In the present embodiment, an insertion hole 55 for inserting the column 2 is provided in the caulking tool 5. The insertion hole 55 passes through the main body portion 511 and the rotating portion 512, for example, along the axis L2, and extends along the center of the shaft portion 52. Accordingly, when the ferrule 3 is caulked using the caulking tool 5, the caulking tool 5 is rotated with the column 2 inserted through the ferrule 3 being inserted into the insertion hole 55 as shown in FIG. Can be made.

  A groove 56 extending from the outer peripheral surface of the caulking tool 5 communicates with the insertion hole 55. The groove 56 is configured by communication between a first groove portion 561 formed in the main body portion 511 and a second groove portion 562 formed in the rotating portion 512. The first groove portion 561 extends from the outer peripheral surface of the main body portion 511 to the insertion hole 55, and has a width that is slightly larger than the outer diameter of the column 2. On the other hand, the second groove portion 562 has a larger width than the first groove portion 561 and penetrates the rotating portion 512 and communicates with the first groove portion 561.

  Thus, after the ferrule 3 is caulked and attached to the column 2 inserted through the insertion hole 55 of the caulking tool 5, the column 2 can be retracted through the groove 56 communicating with the insertion hole 55. . Therefore, since the ferrule 3 is caught and the column 2 cannot be pulled out from the caulking tool 5, the work of caulking the ferrule 3 and attaching it to the column 2 can be performed more smoothly.

  FIG. 9 is a perspective view showing a modification of the caulking tool 5. FIG. 10 is a front view of the caulking tool 5 of FIG. FIG. 11 is a cross-sectional view of the caulking tool 5 of FIG. 10 taken along the line B-B. The caulking tool 5 includes a grip 51, a shaft 52, and a ball plunger 53, as in the above embodiment.

  In the above-described embodiment, the configuration in which the rotation amount of the rotation unit 512 relative to the main body unit 511 is limited by the pin 54 and the long hole 515 has been described. On the other hand, in this modified example, the pin 54 and the long hole 515 are not provided, and the restoring mechanism 57 for automatically returning the rotating part 512 to the original position with respect to the main body part 511 is provided. In this modified example, the configuration other than the configuration relating to the restoration mechanism 57 is the same as that of the above-described embodiment. Therefore, the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

  The restoring mechanism 57 includes, for example, a pair of pins 571 protruding from the inner peripheral surface of the rotating unit 512 toward the main body 511 side, a pair of compression springs 572 provided on the main body 511 and contacting each pin 571. It has. The pair of pins 571 and the compression spring 572 are symmetrically arranged on both sides with the axis L2 interposed therebetween.

  The main body 511 is not formed with the opening 516 as in the above embodiment, and is formed with a recess 517 for receiving a pair of pins 571 and a compression spring 572, respectively. Further, for example, a cover member 58 is attached to the surface of the main body 511 where the recess 517 is formed, and each recess 517 is closed by the cover member 58.

  One end of the compression spring 572 is in contact with the inner surface of the recess 517 and the other end is in contact with the pin 571. As shown in FIG. 10, when the ferrule 3 is pressed using the caulking tool 5 with the ball 531 locked in the through hole 514 and a torque exceeding a certain value is applied, the rotating portion 512 is It will rotate with respect to the part 511. At this time, as indicated by a two-dot chain line in FIG. 10, the other end of each compression spring 572 is pushed down by each pin 571.

  Therefore, when the operator subsequently releases his / her hand from the grip 51, each pin 571 is pushed back by the urging force of each compression spring 572, and the rotating portion 512 is automatically moved to the original position with respect to the main body 511. Return to. This eliminates the need for the operator to manually return the rotating portion 512 to the original position, thereby enabling the work to be performed more smoothly.

  However, the pin 571 and the compression spring 572 are not limited to a pair, and may be provided one by one, or may be provided by three or more. Further, the urging member that urges the pin 571 is not limited to the compression spring 572, and may be constituted by an elastic body other than the compression spring 572, or may be constituted by a member other than the elastic body. There may be. Further, the restoring mechanism 57 may be configured to automatically return the rotating unit 512 to the original position with respect to the main body unit 511 using a configuration other than the pin 571.

  FIG. 12 is a perspective view showing a configuration example of the ferrule caulking device 100 according to the second embodiment of the present invention, in which the caulking tool 5 is omitted. 13 is a partial cross-sectional view of the ferrule caulking device 100 of FIG.

  In the present embodiment, the main body 4 includes a ferrule holding member 45. In the first embodiment, the ferrule housing portion 414 is configured by the concave portion 412 formed in the first main body portion 41 of the main body 4. However, in this embodiment, the ferrule holding member 45 attached to the first main body portion 41. The ferrule accommodation part 451 is comprised by these. In the present embodiment, since the configuration other than the configuration relating to the ferrule holding member 45 is the same as that of the first embodiment, the same configurations are denoted by the same reference numerals and detailed description thereof is omitted.

  The ferrule holding member 45 is a member in which an insertion portion 452 inserted into the first main body portion 41 and a protruding portion 453 protruding from the first main body portion 41 are integrally formed, and a cylindrical body extending in a straight line. It is comprised by. A recess 417 extending in parallel to the axis L1 is formed on the end surface 411 of the first main body 41, and the insertion portion 452 of the ferrule holding member 45 is press-fitted into the recess 417.

  In this example, a plurality of concave portions 417 are formed on the end surface 411 of the first main body portion 41, and a ferrule holding member 45 having a different shape of the ferrule housing portion 451 can be press-fitted into each concave portion 417. However, the ferrule holding member 45 is not limited to a configuration in which the ferrule holding member 45 is press-fitted into the first main body portion 41, and the first main body portion in other forms such as a configuration in which the ferrule holding member 45 is screwed into the first main body portion 41. 41 may be attached. Further, the ferrule holding member 45 can be formed integrally with the first main body portion 41.

  The ferrule housing portion 451 is formed on the end surface of the protruding portion 453 of the ferrule holding member 45 opposite to the insertion portion 452 side. The ferrule 3 is inserted into the ferrule housing part 451 from the tapered one end part side. The ferrule housing part 451 is slightly larger than the outer diameter of the ferrule 3 on the other end side, and is communicated with the through-hole 455 through the step part 454 when the bottom part is narrowed.

  The inner diameter of the through-hole 455 varies depending on the shape of the ferrule 3 accommodated in the ferrule accommodating portion 451 and is slightly larger than the outer diameter of one end of the ferrule 3 accommodated in the ferrule accommodating portion 451. Therefore, one end portion of the ferrule 3 accommodated in the ferrule accommodating portion 451 slightly enters the through hole 455, and the outer peripheral surface of the one end portion and the step portion 454 come into contact with each other.

  The through hole 455 passes through the ferrule holding member 45 in a direction parallel to the axis L1, and is formed in the first main body portion 41 when the ferrule holding member 45 is attached to the first main body portion 41. It communicates with the through-hole 416. In this example, the inner diameter of the portion on the insertion portion 452 side in the through-hole 455 is enlarged, but it is not limited to such a configuration. Note that the through hole 416 formed in the first main body 41 is the same as in the first embodiment.

  On the outer peripheral surface of the protruding portion 453 of each ferrule holding member 45, a screw thread having the same cross-sectional shape is formed. The caulking tool 5 that is commonly used for each ferrule holding member 45 is formed with a recess 59 into which the protruding portion 453 of each ferrule holding member 45 is inserted. The concave portion 59 has an inner diameter corresponding to the outer diameter of the protruding portion 453 of the ferrule holding member 45, and a thread groove is formed on the inner peripheral surface. Therefore, the caulking tool 5 is guided in parallel to the axis L1 by inserting the protrusion 453 of the ferrule holding member 45 into the recess 59 of the caulking tool 5 and screwing the caulking tool 5 into the ferrule holding member 45. Can do.

  In a state where the ferrule 3 is housed in the ferrule housing portion 451 and the outer peripheral surface of one end portion of the tapered ferrule 3 is in contact with the stepped portion 454, the other end portion of the ferrule 3 protrudes from the ferrule housing portion 451 to the outside. In this state, when the column 2 is inserted into the insertion hole 31 of the ferrule 3 and the caulking tool 5 is screwed into the projecting portion 453 of the ferrule holding member 45, the bottom surface 591 of the concave portion 59 of the caulking tool 5 is shown in FIG. Can be brought into contact with the end face 32 on the other end side of the ferrule 3.

  The caulking tool 5 is further screwed from this state, and the caulking tool 5 is guided by the protruding portion 453 of the ferrule holding member 45, whereby the end surface 32 on the other end side of the ferrule 3 is pressed by the bottom surface 591 of the recess 59. One end of the ferrule 3 through which 2 is inserted can be caulked at the stepped portion 454. At this time, the stepped portion 454 constitutes a contact portion for making contact and caulking with the ferrule 3 housed in the ferrule housing portion 451.

  In the present embodiment, the protruding portion 453 of the ferrule holding member 45 constitutes a pressing guide portion that guides the caulking tool 5. As described above, when the pressing guide portion is provided outside the main body 4 and the other end portion of the ferrule 3 protrudes from the ferrule housing portion 451, the ferrule 3 is pressed and caulked. However, it is easy to pick out the other end portion of the ferrule 3 from the outside. In addition, there is an effect that the stepped portion 454 can be easily formed.

  Also in this embodiment, the caulking tool 5 can be configured to include a torque limiter as in the above-described embodiment. That is, by providing the crimping tool 5 with a torque limiter exemplified by the above-described ball plunger 53, the torque when pressing the ferrule 3 can be limited to a certain value or less.

  In the above embodiment, the configuration in which the first main body portion 41 and the second main body portion 42 are relatively displaced by rotating with each other has been described. However, the configuration is not limited to such a configuration, and the first main body portion 41 and the second main body portion 42 may be configured to be relatively displaced in other manners such as sliding with respect to each other. Further, the first main body portion 41 and the second main body portion 42 can be integrally formed.

  The main body 4 is not limited to the configuration in which the column abutting surface 425 is formed, but may be configured such that a plurality of types of ferrules 3 can be simply crimped and attached to the column 2. In this case, it is necessary to measure the protruding amount of the column 2 from the ferrule 3 with a ruler or to cut the tip of the column 2, but it is necessary to prepare a plurality of types of jigs corresponding to each ferrule 3. Because there is no, work can be performed more smoothly.

  Moreover, in the above embodiment, the structure which the crimping tool 5 is guided with a screw type with respect to the main body 4 was demonstrated. However, the configuration is not limited to such a configuration, and the caulking tool 5 is guided with respect to the main body 4 in such a manner that the caulking tool 5 is slid in a direction parallel to the axis L1 or is rotated in a spiral shape with a configuration other than a screw. May be.

DESCRIPTION OF SYMBOLS 1 Ferrule caulking apparatus 2 Column 3 Ferrule 4 Main body 5 Caulking tool 31 Insertion hole 32 End surface 41 1st main body part 42 2nd main body part 43 Rotating shaft 44 Stopper 45 Ferrule holding member 51 Holding part 52 Shaft part 53 Ball plunger 54 Pin 55 Insertion Hole 56 Groove 57 Restoration mechanism 58 Cover member 59 Concave 100 Ferrule caulking device 411 End surface 412 Concave 413 Press guide part 414 Ferrule housing part 415 Step part 416 Through hole 417 Concave part 421 Column insertion member 422 Column abutting member 423 Fixing tool 424 Column insertion member 424 Hole 425 Column contact surface 441 Recess 451 Ferrule housing part 452 Insertion part 453 Projection part 454 Step part 455 Through hole 511 Main body part 512 Rotating part 513 Recessed part 514 Through hole 515 Long hole 516 Opening part 51 Recess

Claims (12)

A ferrule caulking device for caulking a ferrule through which a column is inserted,
A main body in which a ferrule having a column inserted therein is accommodated;
A caulking tool that is detachable with respect to the main body, and that presses and caulks a ferrule accommodated in the main body;
The body is
A plurality of ferrule housing parts each capable of accommodating ferrules of different shapes, each having a contact part for caulking in contact with the contained ferrule,
A ferrule caulking device, comprising: a plurality of pressing guide portions that are formed in association with the plurality of ferrule housing portions and that press the caulking tool to press the ferrules in the corresponding ferrule housing portions.   The ferrule caulking device according to claim 1, wherein one of the caulking tool and the pressing guide portion is attached by being screwed into the other.   The column contact surface with which the front-end | tip of the column penetrated by the ferrule accommodated in each of these ferrule accommodating parts is abutted is formed in the said main body, The Claim 1 or 2 characterized by the above-mentioned. Ferrule caulking device. A plurality of the column contact surfaces are formed in association with the plurality of ferrule housing portions, respectively.
The ferrule caulking device according to claim 3, wherein a distance between the contact portion of each ferrule housing portion and the column contact surface corresponding to each ferrule housing portion is different. The main body includes a first main body portion in which the plurality of ferrule housing portions are formed, and a second main body portion in which the plurality of column contact surfaces are formed,
The ferrule caulking device according to claim 4, wherein a combination of the ferrule housing portion and the column contact surface is switched by relative displacement of the first main body portion and the second main body portion.   6. The ferrule caulking device according to claim 5, wherein the first main body portion and the second main body portion are relatively displaced by being rotated on the same axis.   The ferrule caulking device according to claim 6, wherein the first main body portion and the second main body portion are formed of regular polygons having the same cross-sectional shape.   The said main body contains the stopper which controls the relative displacement of the said 1st main-body part and the said 2nd main-body part in the position where the said ferrule accommodating part and the said column contact surface mutually oppose. The ferrule caulking device according to any one of the above.   The ferrule caulking device according to any one of claims 3 to 8, wherein at least a part of the main body is formed to be transparent or translucent so that the column contact surface can be visually recognized from the outside.   The ferrule caulking device according to any one of claims 3 to 9, wherein a part forming the column contact surface is detachable.   The ferrule caulking device according to any one of claims 1 to 10, wherein the caulking tool includes a torque limiter that limits a torque when the ferrule is pressed to a predetermined value or less.   The caulking tool is formed with an insertion hole through which the column is inserted, and a groove extending from an outer peripheral surface of the caulking tool to the insertion hole and retracting the column from the insertion hole. The ferrule caulking device according to any one of claims 1 to 11.

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